Decouple remote logging configuration from core airflow

### Body `airflow_local_settings.py` hardcodes imports and configuration for each remote logging provider (S3, GCS, OpenSearch, etc). Example: https://github.com/apache/airflow/blob/main/airflow-core/src/airflow/config_templates/airflow_local_settings.py#L165-L181 Right now this means that: - Core must know provider implementation details - Provider changes require core updates - New logging providers must modify core code Find a way to have providers register their remote logging config themselves - either via provider.yml or entrypoints. More details to follow in a PR once I have completed some investigation here. ### Committer - [x] I acknowledge that I am a maintainer/committer of the Apache Airflow project.