Cubed sphere 2 grid builder

[mo-jonasganderton]

Description

Part 2 of implementing a new Cubed Sphere grid (follows #245).
These changes so far include:

• CS2 grid builder
• CS2 grid factory
• CS2 projection

Impact

Once everything else is also implemented, this makes the cubed sphere more maintainable.

Checklist

• I have performed a self-review of my own code
• I have made corresponding changes to the documentation
• I have run the unit tests before creating the PR

[wdeconinck]

Please rebase on develop and mark as ready for review when you want me to have a look.

[wdeconinck]

Hi @mo-jonasganderton, with the new CS approach the Projection can be arbitrary and probably should not derive from a dedicated one for the CS.
You can add a test where the projection passed is rotation, and verify that the {lonlat} projected coordinates are no longer matching the original {xy} coordinates as they are rotated.

[github-actions]

Caution

This pull request contains changes to GitHub workflows!
Proceed with caution and if not sure, contact your GitHub admin.

[github-actions]

Caution

This pull request contains changes to GitHub workflows!
Proceed with caution and if not sure, contact your GitHub admin.

[github-actions]

Caution

This pull request contains changes to GitHub workflows!
Proceed with caution and if not sure, contact your GitHub admin.

[mo-jonasganderton]

Hi @wdeconinck, indeed Olly mentioned removing the specific projection too, so now I have done so. Extra tests for rotation added too.

[github-actions]

Caution

This pull request contains changes to GitHub workflows!
Proceed with caution and if not sure, contact your GitHub admin.

[wdeconinck]

Looks good to merge! Thanks @mo-jonasganderton 🙏