feat: Added web server for deployment

[frgfm]

As per #20, a dedicated service needed to set for wildfire risk estimation. Consequently, this PR introduces the following features:

• refactored package hierarchy for cleaner imports
• removed unused dependencies
• added FastAPI dedicated app to have a web server that processes requests with pyro_risks
• added Docker orchestration for local development with the web server
• added a CI workflow to check that the web server can be run
• added heroku deployment files (Procfile, Aptfile)

Here is how the server processes the request:

Merging this PR successfully will close #20
Any feedback is welcome!

cc @Akilditu @nrslt

[jsakv]

Thanks for your PR @frgfm and thanks for adding the dummy cache directory !

[codecov]

Codecov Report

Merging #27 (3791f1e) into master (69e0177) will decrease coverage by 0.92%.
The diff coverage is 76.92%.

@@            Coverage Diff             @@
##           master      #27      +/-   ##
==========================================
- Coverage   95.96%   95.04%   -0.93%     
==========================================
  Files          15       15              
  Lines         694      686       -8     
==========================================
- Hits          666      652      -14     
- Misses         28       34       +6     

Flag	Coverage Δ
unittests	95.04% <76.92%> (-0.93%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pyro_risks/datasets/queries_api.py	78.57% <62.50%> (-21.43%)	⬇️
pyro_risks/datasets/era_fwi_viirs.py	93.47% <100.00%> (+0.79%)	⬆️
pyro_risks/models/__init__.py	100.00% <100.00%> (ø)
pyro_risks/models/predict.py	93.54% <100.00%> (+0.21%)	⬆️
pyro_risks/models/score_v0.py	90.14% <100.00%> (+0.14%)	⬆️

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[frgfm]

Thanks for your PR @frgfm and thanks for adding the dummy cache directory !

@dataJSA I think you approved the PR and somehow cancelled your own review by re-requesting it 😅

[jsakv]

Yes I got ahead of myself ! Now I think it's ok 😄