Add support for changing tracing directives at runtime

[ljoss17]

Closes: #3564

Description

This PR adds a handler which allows users to update tracing log directives without restarting Hermes.

Three CLIs are also added to facilitate this:

• hermes logs set-log-level which update the log level
• hermes logs set-raw-filter which send an arbitrary string used as a new tracing directive
• hermes logs reset! which resets the log level using the one defined in the config.toml

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PR author checklist:

• Added changelog entry, using unclog.
• Added tests: integration (for Hermes) or unit/mock tests (for modules).
• Linked to GitHub issue.
• Updated code comments and documentation (e.g., docs/).
• Tagged one reviewer who will be the one responsible for shepherding this PR.

Reviewer checklist:

• Reviewed Files changed in the GitHub PR explorer.
• Manually tested (in case integration/unit/mock tests are absent).