[cli_wallet] allow to send transactions nonblocking way
Currently when sending transaction using cli_wallet we usually need to wait for next block available on connected node. This means wallet is blocked for circa 3 seconds. There are few exceptions, like:
- transfer_nonblocking - delegate_vesting_shares_nonblocking - claim_account_creation_nonblocking
This proposal is about adding nonblocking mode/version to all kind of transactions. Event if there are any obstacles why this is hard task - then it would be nice to have it documented as an issue on gitlab.