Add missing unit tests for TokenAPI

[has5aan]

Description

• TokenAPI.transfer - Missing specs Implementation exists and is aligned with LIP 0051.

• TokenAPI.getAvailableBalance

  • throws error, other than NotFoundError if provided address and tokenID are invalid format. Implementation is aligned with LIP 0051.

• TokenAPI.getLockedAmount

  • throws error other than NotFoundError if provided address, tokenID and moduleID are invalid format. Implementation is aligned with LIP 0051.

• TokenAPI.getEscrowedAmount

  • throws error other than NotFoundError if provided escrowChainID and tokenID are invalid format. Implementation is aligned with LIP 0051.

• TokenAPI.initializeToken

  • throws error if provided localID is in invalid format. Implementation is aligned with LIP 0051.

• TokenAPI.mint

  • throws error if provided address, tokenID and amount are in invalid format. Implementation is aligned with LIP 0051.

• TokenAPI.lock

  • throws error if provided address, moduleID and amount are in invalid format. Implementation is aligned with LIP 0051.

• TokenAPI.unlock

  • throws error if provided address, moduleID, tokenID and `amount are in invalid format. Implementation is aligned with LIP 0051.

Which version(s) does this affect? (Environment, OS, etc...)

Lisk SDK development branch.

[has5aan]

Implementation is aligned with LIP 0051 and no changes are necessary, the issue description has been updated based on recent comparison for alignment with LIP 0051.