* OPIK-152 document log level

* OPIK-152 document logging and database

* OPIK-152 document analytics database for migrations

* OPIK-152 document analytics database for service

* OPIK-152 document distributed locking

* OPIK-152 document redis and authentication

* OPIK-152 document server and batch operations

* OPIK-152 document rate limit

* OPIK-152 document usage report, metadata, cors and encryption

* OPIK-152 document llm providers and refactor