Add L1 to Ethereum long-tail swaps

[0xApotheosis]

Handle this switch case: case TradeType.L1ToLongTail: by taking inspiration from the existing long-tail to L1 logic in getLongtailToL1Quote().

We'll need to update the memo from the THORChain quote to be in the format of WAP:ASSET:DESTADDR:LIM:AFFILIATE:FEE:DEXAggregatorAddr:FinalTokenAddr:MinAmountOut, and add the supported (whitelisted) assets to the buy asset function.

[gomesalexandre]

@0xApotheosis note: assuming #6072 is merged by then, #5805 will also need to be tested - and closed if happy - as part of this.

[0xean]

closing as not much usage of longtail swap