[ MEX-662 ] Changed input and output token type to Esdt and fix action on TokenTradingActivity

[EmanuelMiron]

Reasoning

• There was a need of multiple Esdt Token attributes on frontend, and we were sending only the token identifier
• Action on TokenTradingActivity was not working properly, ( the quote / base computation was implemented only for pairTradingActivity )

Proposed Changes

• Change the model and the compute functions to return EsdtType for inputToken and OutputToken
• Implement quote / base computation for token Trading Activity

How to test

tradingActivity(series: "erd1qqqqqqqqqqqqqpgq5jnjpsukhl295ry3wjrd3gtff0amrgux2jpsz3reum") {
    hash,
    timestamp,
    action,
    inputToken {
      identifier,
      decimals,
      balance
    },
    outputToken {
      identifier,
      decimals,
      balance
    }
  }