Handle Moar Wallet Connect Session Requests

[bh2smith]

At this moment we have handlers for

• eth_sign
• personal_sign
• eth_sendTransaction
• eth_signTypedData and
• eth_signTypedData_v4

However there are many other session request types that could be supported...

Wallet Connect Docs: https://docs.walletconnect.com/web3wallet/wallet-usage#responding-to-session-requests

It is not yet clear how exactly we should respond to some of them or which are relevant for us.

Some unhandled request types that have been encountered so far as:

• personal_expire
• session_request_expire

A longer list of possibilities I am aware of, but have not encountered are:

            "eth_accounts",
            "eth_requestAccounts",
            "eth_sendRawTransaction",
            "eth_signTransaction",
            "eth_signTypedData_v3",
            "wallet_switchEthereumChain",
            "wallet_addEthereumChain",
            "wallet_getPermissions",
            "wallet_requestPermissions",
            "wallet_registerOnboarding",
            "wallet_watchAsset",
            "wallet_scanQRCode",
            "wallet_sendCalls",
            "wallet_getCallsStatus",
            "wallet_showCallsStatus",
            "wallet_getCapabilities",