Change Details

https://linear.app/comm/issue/ENG-8306/addwalletstart-rpc do SIWE and add the wallet address to the user's item in the DDB users table if it's successful

https://linear.app/comm/issue/ENG-8306/addwalletstart-rpc this diff introduces two things: 1. new RPC 2. new traits to avoid code duplication

https://linear.app/comm/issue/ENG-8306/addwalletstart-rpc do SIWE and add the wallet address tthis diff introduces two the user's item in the DDB users table if it's successfulings: 1. new RPC 2. new traits to avoid code duplication