net_listening
net_peerCount
* Add net_listening net_peerCount endpoint * Add test cases * Use RPC client from context * Fix lint issue * Revert unnecessary changes * Update JSON RPC documentation
* refactor: rpc namespace refactor - txpool * refactor: rpc namespace refactor - net * refactor: rpc namespace refactor - web3 * refactor: rpc namespace refactor - eth * refactor: rpc namespace refactor - personal * fix: api to uppercase * fix: fix import cycle * fix: fix import cycle