This commit introduces a three-database architecture to the application,
as specified in the `db_logic.md` file.
The changes include:
- A SQL initialization script (`db/init/init.sql`) to create the
`USERS_ALMA`, `vanity_hr`, and `vanity_attendance` databases and their
respective tables.
- SQLAlchemy models for all tables, organized into separate files
within the `models` directory.
- Refactoring of the database connection logic in `modules/database.py`
to support connections to all three databases.
- Creation of a `modules/logger.py` to handle request logging to the
`USERS_ALMA` database.
- Updates to `docker-compose.yml` to mount the initialization script and
build the bot image locally.
- Updates to `.env.example` to include the new database environment
variables.
- Restoration of the data dictionary to `db_tasks.md`.
