fix: crash of partner-chains-node smart-contracts subcommand + small fixes

[LGLO]

Description

Changes from the most to least important ones

• partner-chains-node smart-contracts <...> was broken because of double logging initialization, we can use both env_logger and log4rs
• This major bug was not noticed because we added QOL binary in smart-contracts-commands, so I argue having it turned out to be detrimental
• ogmios-host renamed to ogmios-url, because it more than a host
• Added return of automatically selected genesis-utxo in run_init_goveranance
• removed dead code for collateral selection
• removed dead code for test input creation

Checklist

• Commit sequence broadly makes sense and commits have useful messages.
• New tests are added if needed and existing tests are updated.
• Relevant logging and metrics added
• CI passes. See note on CI.
• Any changes are noted in the changelog.md for affected crate
• Self-reviewed the diff