Toolkit should simplify nested types

[aesedepece]

The toolkit wrapper currently simplifies Radon types such as RadonArray → Array, but only for simple types, not in nested structures.

For example, look at the types inside maps in this execution report:

╔════════════════════════════════════════════╗
║ Witnet data request local execution report ║
╚╤═══════════════════════════════════════════╝
 │
 │  ┌────────────────────────────────────────────────┐
 ├──┤ Retrieval stage                                │
 │  ├────────────────────────────────────────────────┤
 │  │ Number of retrieved data sources: 4            │
 │  └┬───────────────────────────────────────────────┘
 │   │
 │   ├─[ Source #0 (api.binance.us) ]
 |   │  Method: HTTP-GET
 |   │  Complete URL: https://api.binance.us/api/v3/ticker/price?symbol=USDCUSD
 |   │  Number of executed operators: 4
 |   │  Execution time: 0.02007 ms
 |   │  Execution trace:
 │   │    [0] HTTP-GET -> String: "{\"symbol\":\"USDCUSD\",\"price\":\"0.9999\"}"
 │   │    [1] .parseJSONMap() -> Map: {"price":{"RadonString":"0.9999"},"symbol":{"RadonString":"USDCUSD"}}
 │   │    [2] .getFloat(price) -> Float: 0.9999
 │   │    [3] .multiply(1000000) -> Float: 999900
 │   │    [4] .round() -> Integer: 999900
 |   │  Result: Integer: 999900
 |   │
 │   ├─[ Source #1 (www.bitstamp.net) ]
 |   │  Method: HTTP-GET
 |   │  Complete URL: https://www.bitstamp.net/api/v2/ticker/usdcusd
 |   │  Number of executed operators: 4
 |   │  Execution time: 0.03022 ms
 |   │  Execution trace:
 │   │    [0] HTTP-GET -> String: "{\"high\": \"1.00203\", \"last\": \"0.99962\", \"timestamp\": \"1646140864\", \"bid\": \"0.99962\", \"vwap\": \"0.99878\", \"volume\": \"1494770.88851\", \"low\": \"0.99558\", \"ask\": \"0.99999\", \"open\": \"1.00023\"}"
 │   │    [1] .parseJSONMap() -> Map: {"ask":{"RadonString":"0.99999"},"bid":{"RadonString":"0.99962"},"high":{"RadonString":"1.00203"},"last":{"RadonString":"0.99962"},"low":{"RadonString":"0.99558"},"open":{"RadonString":"1.00023"},"timestamp":{"RadonString":"1646140864"},"volume":{"RadonString":"1494770.88851"},"vwap":{"RadonString":"0.99878"}}
 │   │    [2] .getFloat(last) -> Float: 0.99962
 │   │    [3] .multiply(1000000) -> Float: 999620
 │   │    [4] .round() -> Integer: 999620
 |   │  Result: Integer: 999620
 |   │
 │   ├─[ Source #2 (api.bittrex.com) ]
 |   │  Method: HTTP-GET
 |   │  Complete URL: https://api.bittrex.com/v3/markets/USDC-USD/ticker
 |   │  Number of executed operators: 4
 |   │  Execution time: 0.02832 ms
 |   │  Execution trace:
 │   │    [0] HTTP-GET -> String: "{\"symbol\":\"USDC-USD\",\"lastTradeRate\":\"1.00000000\",\"bidRate\":\"0.99990000\",\"askRate\":\"0.99999000\"}"
 │   │    [1] .parseJSONMap() -> Map: {"askRate":{"RadonString":"0.99999000"},"bidRate":{"RadonString":"0.99990000"},"lastTradeRate":{"RadonString":"1.00000000"},"symbol":{"RadonString":"USDC-USD"}}
 │   │    [2] .getFloat(lastTradeRate) -> Float: 1
 │   │    [3] .multiply(1000000) -> Float: 1000000
 │   │    [4] .round() -> Integer: 1000000
 |   │  Result: Integer: 1000000
 |   │
 │   └─[ Source #3 (api.kraken.com) ]
 |      Method: HTTP-GET
 |      Complete URL: https://api.kraken.com/0/public/Ticker?pair=USDCUSD
 |      Number of executed operators: 7
 |      Execution time: 0.100541 ms
 |      Execution trace:
 │        [0] HTTP-GET -> String: "{\"error\":[],\"result\":{\"USDCUSD\":{\"a\":[\"1.00010000\",\"5934071\",\"5934071.000\"],\"b\":[\"1.00000000\",\"236\",\"236.000\"],\"c\":[\"1.00000000\",\"64.16094880\"],\"v\":[\"9435183.06631663\",\"21557056.61070495\"],\"p\":[\"0.99995380\",\"0.99996195\"],\"t\":[4033,7216],\"l\":[\"0.99990000\",\"0.99990000\"],\"h\":[\"1.00010000\",\"1.00010000\"],\"o\":\"1.00000000\"}}}"
 │        [1] .parseJSONMap() -> Map: {"error":{"RadonArray":[]},"result":{"RadonMap":{"USDCUSD":{"RadonMap":{"a":{"RadonArray":[{"RadonString":"1.00010000"},{"RadonString":"5934071"},{"RadonString":"5934071.000"}]},"b":{"RadonArray":[{"RadonString":"1.00000000"},{"RadonString":"236"},{"RadonString":"236.000"}]},"c":{"RadonArray":[{"RadonString":"1.00000000"},{"RadonString":"64.16094880"}]},"h":{"RadonArray":[{"RadonString":"1.00010000"},{"RadonString":"1.00010000"}]},"l":{"RadonArray":[{"RadonString":"0.99990000"},{"RadonString":"0.99990000"}]},"o":{"RadonString":"1.00000000"},"p":{"RadonArray":[{"RadonString":"0.99995380"},{"RadonString":"0.99996195"}]},"t":{"RadonArray":[{"RadonInteger":"4033"},{"RadonInteger":"7216"}]},"v":{"RadonArray":[{"RadonString":"9435183.06631663"},{"RadonString":"21557056.61070495"}]}}}}}}
 │        [2] .getMap(result) -> Map: {"USDCUSD":{"RadonMap":{"a":{"RadonArray":[{"RadonString":"1.00010000"},{"RadonString":"5934071"},{"RadonString":"5934071.000"}]},"b":{"RadonArray":[{"RadonString":"1.00000000"},{"RadonString":"236"},{"RadonString":"236.000"}]},"c":{"RadonArray":[{"RadonString":"1.00000000"},{"RadonString":"64.16094880"}]},"h":{"RadonArray":[{"RadonString":"1.00010000"},{"RadonString":"1.00010000"}]},"l":{"RadonArray":[{"RadonString":"0.99990000"},{"RadonString":"0.99990000"}]},"o":{"RadonString":"1.00000000"},"p":{"RadonArray":[{"RadonString":"0.99995380"},{"RadonString":"0.99996195"}]},"t":{"RadonArray":[{"RadonInteger":"4033"},{"RadonInteger":"7216"}]},"v":{"RadonArray":[{"RadonString":"9435183.06631663"},{"RadonString":"21557056.61070495"}]}}}}
 │        [3] .getMap(USDCUSD) -> Map: {"a":{"RadonArray":[{"RadonString":"1.00010000"},{"RadonString":"5934071"},{"RadonString":"5934071.000"}]},"b":{"RadonArray":[{"RadonString":"1.00000000"},{"RadonString":"236"},{"RadonString":"236.000"}]},"c":{"RadonArray":[{"RadonString":"1.00000000"},{"RadonString":"64.16094880"}]},"h":{"RadonArray":[{"RadonString":"1.00010000"},{"RadonString":"1.00010000"}]},"l":{"RadonArray":[{"RadonString":"0.99990000"},{"RadonString":"0.99990000"}]},"o":{"RadonString":"1.00000000"},"p":{"RadonArray":[{"RadonString":"0.99995380"},{"RadonString":"0.99996195"}]},"t":{"RadonArray":[{"RadonInteger":"4033"},{"RadonInteger":"7216"}]},"v":{"RadonArray":[{"RadonString":"9435183.06631663"},{"RadonString":"21557056.61070495"}]}}
 │        [4] .getArray(a) -> Array: [{"RadonString":"1.00010000"},{"RadonString":"5934071"},{"RadonString":"5934071.000"}]
 │        [5] .getInteger(0) -> Float: 1.0001
 │        [6] .multiply(1000000) -> Float: 1000100
 │        [7] .round() -> Integer: 1000100
 |      Result: Integer: 1000100
 │
 │  ┌────────────────────────────────────────────────┐
 ├──┤ Aggregation stage                              │
 │  ├────────────────────────────────────────────────┤
 │  │ Execution time: 0.00615 ms                     │
 │  │ Result is Integer: 1000000                     │
 │  └────────────────────────────────────────────────┘
 │  
 │  ┌────────────────────────────────────────────────┐
 └──┤ Tally stage                                    │
    ├────────────────────────────────────────────────┤
    │ Execution time: 0.00148 ms                     │
    │ Result is Integer: 1000000                     │
    └────────────────────────────────────────────────┘