Incorporate gateway-rs api changes

[pritamghanghas]

Verify all API changes in gateway-rs grpc and modify hm-pyhelper's gateway_grpc client accordingly.
Remove the current method of extracting version from dpkg won't work as the client side which will be mostly diagnostic container will not have the gateway-rs installed.
The height_res message also returns the connected gateway's miner version, include this in summary. we keep it similar to info cli method.

Acceptance Criterion

• remove the version fetching from dpkg.
• expose any additional data from grpc like validator's version number.
• figure out a way of getting gateway-rs version info.
  • we can patch gateway-rs to expose to version information and submit the patch upstream.