Add extra validation to the protocol_upgrade_proposal command

[gordsport]

When the validators submitted the protocol_upgrade_proposal command for the patch release to 0.71.6.

Command used:

vega protocol_upgrade_proposal --home <YOUR_VEGA_HOME> --vega-release-tag v0.71.6 --height 3917600

Error message presented:

failed to get commander: couldn't initialise ABCI client: abci client addr is empty in config

This is believed to be due to the fact the Tendermint/cometBFT config is not complete.

Van we validate this earlier so that the validators can fix sooner, also is there any way to default to a known config in order for this command to be successful yet still advise they update.

[jeremyletang]

2 things to be done here:

• [ ] add validation to proper semver format, earlier issue today was a validator proposing for the version 0.71.9 instead of v0.71.9
• [ ] also when that error occur, add a fallback to the default tendermint port address, and then an error if it doesn't work as well.