Create and display pmtiles for snow coverage

[dgboss]

Provided snow coverage data is available from the NSIDC, we now create a pmtiles layer and store it in our object storage at psu/pmtiles/snow/{yyyy-mm-dd}/snowCoverage{yyyymmdd.pmtiles}

Front-end implementation and expected behavior

• On initial load, and everytime the Date of Interest changes, we query the API to get the date of the most recently processed snow that is less than or equal to the Date of Interest. If a date is returned, this is used in constructing the URL for fetching pmtiles.
• A 'Snow Coverage' option was added to the legend which allows you to toggle the snow layer on/off. Since the date of our snow coverage doesn't necessarily align with the Date of Interest due to processing delays, the legend displays the date the snow layer represents.

Test Links:

Landing Page
MoreCast 2.0
Percentile Calculator
MoreCast
C-Haines
FireBat
FireBat bookmark
Auto Spatial Advisory (ASA)
HFI Calculator

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 44.11765% with 57 lines in your changes are missing coverage. Please review.

Project coverage is 80.68%. Comparing base (38b29d3) to head (b70672e).

Files	Patch %	Lines
api/app/jobs/viirs_snow.py	27.08%	35 Missing ⚠️
api/app/utils/pmtiles.py	35.71%	9 Missing ⚠️
api/app/routers/snow.py	63.15%	7 Missing ⚠️
web/src/api/snow.ts	50.00%	2 Missing and 2 partials ⚠️
api/app/utils/polygonize.py	33.33%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3444      +/-   ##
==========================================
- Coverage   81.33%   80.68%   -0.66%     
==========================================
  Files         281      286       +5     
  Lines       10053    10199     +146     
  Branches      495      497       +2     
==========================================
+ Hits         8177     8229      +52     
- Misses       1741     1833      +92     
- Partials      135      137       +2     

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[brettedw]

Looks great, nice work!

[conbrad]

Nice, I like that the generic polygonization functions were pulled out 😎

[sonarqubecloud]

Quality Gate passed

Issues
2 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud