Set up wireguard network for task worker from manager container

[elfkuzco]

Rationale

Set up wireguard network for task woker from manager container

Changes

• Make scheduler interval to be in seconds for finer control
• Seperate manager and task code
• Create top command mirrors-qa-backend which takes update-mirrors, create-worker, scheduler as subcommands. E.g, mirrors-qa-backend update-mirrors updates the mirrors list.
• Add curl in backend Dockerfile. Needed to enable healthcheck as worker_manager often starts when mirrors are being updated. To be removed as things progress.
• Set up worker manager which sets up network for task worker and cleans up resources on exit. This is more like a proof of concept as the task worker just queries a mullvad endpoint and writes results to a mount point set up the manager.
• Add documentation on how to set up services in dev folder.
• Add seperate CI/CD jobs for the task_worker

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 8.33333% with 77 lines in your changes missing coverage. Please review.

Project coverage is 69.62%. Comparing base (9074157) to head (2abcb0d).

Files	Patch %	Lines
backend/src/mirrors_qa_backend/entrypoint.py	0.00%	29 Missing :warning:
backend/src/mirrors_qa_backend/cli/worker.py	0.00%	26 Missing :warning:
backend/src/mirrors_qa_backend/cli/mirrors.py	0.00%	15 Missing :warning:
...ckend/src/mirrors_qa_backend/settings/scheduler.py	0.00%	4 Missing :warning:
backend/src/mirrors_qa_backend/cli/scheduler.py	0.00%	3 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #21 +/- ## ========================================== - Coverage 76.52% 69.62% -6.91% ========================================== Files 25 27 +2 Lines 656 711 +55 Branches 57 64 +7 ========================================== - Hits 502 495 -7 - Misses 140 202 +62 Partials 14 14 ```

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[elfkuzco]

Thanks for your feedback on the initial changes. A lot of the changes have made the code better, I think. I have marked some of the changes as resolved and the ones I left unresolved are cases where I did things a bit differently. You can review and let me know what you think.

In summary, the things that are a bit new are:

• use Docker profiles to conditionally start the worker-manager
• make most of the time env variables to be parsed using humanfriendly
• catch all exceptions in the run method of the WorkerManager
• improve dev README