feat: add docker and nginx support

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[Short description explaining the high-level reason for the pull request] api.localhost will direct to api on port 7242 and telemetry.localhost will open the Burr UI

Changes

• add Docker support along with compose file
• nginx as a proxy for api and burr UI
• bug fixes

How I tested this

Tested the docker build

Notes

Checklist

• [x] PR has an informative and human-readable title (this will be pulled into the release notes)
• [x] Changes are limited to a single goal (no scope creep)
• [x] Code passed the pre-commit check & code is left cleaner/nicer than when first encountered.
• [x] Any change in functionality is tested
• [x] New functions are documented (with a description, list of inputs, and expected output)
• [x] Placeholder code is flagged / future TODOs are captured in comments
• [ ] Project documentation has been updated if adding/changing functionality.

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[!IMPORTANT] Adds Docker and Nginx support for email assistant with proxy configuration and minor server updates.

• Docker and Nginx Support:
  • Adds Dockerfile to set up a Python environment and run wrapper.sh.
  • Adds docker-compose.yaml to define services for the app and Nginx, exposing ports 7241 and 7242.
  • Adds nginx.conf to proxy api.localhost to port 7242 and telemetry.localhost to port 7241.
• FastAPI Server:
  • Adds root endpoint in server.py to return a welcome message.
  • Includes router with prefix /email_assistant in server.py.
• Miscellaneous:
  • Fixes type hint bug in _run_through() in server.py.
  • Adds wrapper.sh to start Burr UI and FastAPI server.

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