replace --stake-verification-key-file with --deposit-return-stake-verification-key-file on all action commands

[CarlosLopezDeLara]

We disambiguated treasury withdrawals which require 2 stake credentials with --deposit-return-stake-verification-key-file and --funds-receiving-stake-verification-key-file.

Well, users will appreciate if we have the same clarity on all other action commands, so we want to replace the existing --stake-verification-key-file flag with the more descriptive --deposit-return-stake-verification-key-file on all other governance actions

The same for --stake-verification-key and --stake-verification-key-hash

Replaced with

--deposit-return-stake-verification-key and

--deposit-return-stake-verification-key-hash, respectively.

[smelc]

Marking blocked, because solving this issue will affect the same places as:

• governance: add hash command and remove text/file hash arguments of existing commands #442
• Align create-constitution flags with --anchor-(url|data-hash) new behavior #447

So those two should be tackled first, to avoid merge conflicts hell. This will happen soon, so no worries about getting to this one soon.

[smelc]

Looking at --stake-verification-key-file, I believe the occurrences to change are as follows (red arrows):

I'm omitting:

1. the pStakeAddressCmds caller in Cardano.CLI.Legacy.Options, because it's legacy.
2. the pGovernanceActionTreasuryWithdrawalCmd caller. This one has been changed already, as stated in the issue's description.
3. the pStakeVerifier caller in Cardano.CLI.Erabased.Options.Cmd, because it goes into non-governance commands.