[Quais] - Create method for historical Qi:Quai Method from Core

[mibuono]

There will be a historical data method for Qi and Quai in Core that Quais needs to serve requesters.

The method, data types, and payload should be reviewed from this issue: dominant-strategies/go-quai#1403

[rileystephens28]

This will require adding getQuaiQiConversionRate to the methods switch case in JsonRpcApiProvider.getRpcRequest().

AbstractProvider.getQuaiQiConversionRate(blockNumber: number): Promise<bigint>

This new abstract provider method returns the qi:quai conversion rate at a specified block height (number). This will execute the #perform function with method param getQuaiQiConversionRate