Add conversion to geojson from covjson to covjsonreader

[awarde96]

Description

Covjsonkit 0.2.2 now supports conversion of coveragejson to geojson. To allow this to be used via earthkit-data the GeojsonMixIn has been added to the Covjsonreader.

Contributor Declaration

By opening this pull request, I affirm the following:

• All authors agree to the Contributor License Agreement.
• The code follows the project's coding standards.
• I have performed self-review and added comments where needed.
• I have added or updated tests to verify that my changes are effective and functional.
• I have run all existing tests and confirmed they pass.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.68%. Comparing base (d3c5b57) to head (dcf153e).

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #794   +/-   ##
========================================
  Coverage    85.68%   85.68%           
========================================
  Files          172      172           
  Lines        13185    13191    +6     
  Branches       637      637           
========================================
+ Hits         11297    11303    +6     
  Misses        1698     1698           
  Partials       190      190           

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[sandorkertesz]

@awarde96, many thanks for this development.

Please can you update the covjsonkit version also in environment.yaml and tests/environment-unit-tests.yml?

[awarde96]

I think both should be updated now

[sandorkertesz]

pyproject.toml should be updated too

[awarde96]

Done now