Implement endpoints for XMR API

[phoenix-web3]

• I have read the Contributing file of the documentation.
• I have searched the issues (including closed ones) and believe that this is not a duplicate.
• I am willing to lend a hand to help implement this feature.

Feature Request

Feature Description

We need to implement the following endpoints:

• checkTxProof( )
• checkSpendProof( )
• getHeight( )
• getTransaction( )
• getBlockByHash( )
• getBlockByNumber( )
• estimateFee( )
• getAddressBalance( )
• getAddressesBalance( )

Useful links: Wallet-RPC Daemon-RPC

Use Case(s)