Chore: Refactor logging/telemetry code

[mbfm]

• [ ] Config should be restructured to account for differences in logging/telemetry. Ensure compatibility with THEO.
• [ ] Split up opendut-util/logging.rs and generally look over code, if it should be structured differently.
• [ ] Potentially split up / restructure LoggingConfig struct.
• [ ] "Consolidate" the logging initialization (logging needs config, logging needs auth, config gets loaded again later in CARL). This might be alright, but it doesn't feel very intentional yet.