Add ability to configure coinbase verification in UI

[pavlenex]

This PR adds a Coinbase Verification toggle to Advanced Options for solo pool mining in both setup and Settings. It is enabled by default and controls verify_payout, allowing miners to turn off the check that their payout address appears in the pool’s coinbase transaction.

Before

Always turned on by default

After

Enabled by default, optional to disable

[GitGab19]

I think we should keep verify_payout optional here.

The application layer already defaults verify_payout to false when the field is not present in the config, and this option is only useful for SOLO scenarios. Making it mandatory in TranslatorConfig and normalizing it to true for every translator config makes it look like a general setting, even though it has no meaning for pool/JD modes.