Llamphouse

- Change order messages in context (from desc to asc)
- Add worker as object in server init
- Add authenticator as object in server init
- Add ability to create custom authentication verification
- Make Assistant init with only a unique name
- Change context create_message to insert_message
- Update and add examples

- Implement Graceful shutdown for both worker types.
- Implement pool size customization by env variable and check with maximum available from database connection
- Enhanced `Context` class with the ability to create new tool call step.
- Add remaining runs endpoints: Submit tool output, Cancel run.
- Add remaining run_steps endpoints: List run_step, Retrieve run_step.

- Fixed issue with created_at field causing incorrect ordering by using a separate session for each FastAPI request.
- Ensured sessions are properly closed after each request.
- Moved session maker to the class initialization part to manage sessions more effectively.

- Enhanced `Context` class with the ability to update thread, messages, and run details.
- Create DatabaseManagement class to handle database interact function
- Enable thread worker count customization
- Enable worker's task timeout customization

- Generate new thread, message or run id based on metadata

- Add api key authentication
- Fix metadata type declaration