Feature add data model path configuration support

[samaloney]

Closes #6 and also added pre-commit configuration but it not include in CI yet.

[edoardolegnaro]

can merge after changing typo

[Copilot]

Pull request overview

Adds configurable data/model download paths via environment-driven settings, and introduces pre-commit tooling updates.

Changes:

• Added app/config.py settings for data_path / models_path and wired them into model/data download flows.
• Updated model download utilities to use a configurable cache directory instead of a fixed .cache.
• Added .pre-commit-config.yaml and adjusted Docker/requirements/docs accordingly.

Reviewed changes

Copilot reviewed 11 out of 13 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
requirements.txt	Adjusts dependencies (notably FastAPI extras) and git dependency for arccnet.
app/model_utils.py	Refactors model download/extract caching to use a configurable path.
app/mcintosh_model.py	Uses settings.models_path when downloading the McIntosh model weights.
app/hale_model.py	Uses settings.models_path when downloading the Hale model weights.
app/fulldisk_model.py	Uses settings.models_path when downloading YOLO weights.
app/config.py	Introduces Settings with env-configurable data_path and models_path.
app/classify.py	Passes configured data path into Fido.fetch() for magnetogram downloads.
app/api.py	Formatting/line-wrapping changes to endpoint definitions.
app/main.py	Minor formatting consistency (quotes, trailing commas).
README.md	Documents configuration via env vars and default paths.
Dockerfile	Switches base image tag and changes dependency installation steps; exposes port 80.
.pre-commit-config.yaml	Adds ruff/format/isort/codespell and basic pre-commit hooks.
.gitignore	Normalizes .idea entry formatting.

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[Copilot]

Dependencies are installed twice: first via pip install -r requirements.txt, then again via pip install ... -r /code/requirements.txt. This adds build time and can hide caching/issues. Drop the redundant second install step (or keep only one consistent installation path).

Suggested change

RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt