Add GeckoTerminal as an option to the Market Data fidget

[willyogo]

We have a request to implement GeckoTerminal in the Market Data fidget and make this the default market data provider for token spaces.

Embed url stucture: https://www.geckoterminal.com/{CHAIN}/pools/{POOL_ADDRESS}?embed=1&info=0&swaps=0&grayscale=0&light_chart=1

Example URL: https://www.geckoterminal.com/base/pools/0x4cd15f2bc9533bf6fac4ae33c649f138cb601935?embed=1&info=0&swaps=0&grayscale=0&light_chart=1

AC:

1. A new dropdown is added to the Market Data fidget: Provider
2. Provider options include DexScreener and GeckoTerminal
3. If GeckoTerminal is selected, users can select 'Chain', input PoolAddress, and select Mode: Light or Dark.
4. Chain, PoolAddress, and Mode are passed into the geckoterminal url as query parameters

While we're at it, please update the input name for DexScreener from "Token" to "TokenContractAddress" for clarity, and add the Mode: Light or Dark dropdown.