Allow moon and custom surfaces in spherical coords msg

[adityapande-1995]

Signed-off-by: Aditya aditya050995@gmail.com

🎉 New feature

Summary

Part of the feature : Supporting lunar DEMs and custom surfaces in spherical coordinates. Adds new fields surface_axis_equatorial and surface_axis_polar to spherical coordinates proto msg, allows new enums MOON_SCS and CUSTOM_SURFACE.

Test it

Added test cases.

Depends on

• Compute distance between points on a general celestial body gz-math#434
• SphericalCoordinates: make query methods const gz-math#452
• Accept moon and custom surfaces in world spherical coordinates sdformat#1050

Checklist

• Signed all commits for DCO
• Added tests
• Added example and/or tutorial
• Updated documentation (as needed)
• Updated migration guide (as needed)
• Consider updating Python bindings (if the library has them)
• codecheck passed (See contributing)
• All tests passed (See test coverage)
• While waiting for a review on your PR, please help review another open pull request to support the maintainers

Note to maintainers: Remember to use Squash-Merge and edit the commit message to match the pull request summary while retaining Signed-off-by messages.

🔸🔸🔸🔸🔸🔸🔸🔸🔸🔸🔸🔸🔸🔸🔸🔸🔸🔸🔸🔸🔸🔸🔸🔸🔸🔸🔸🔸🔸🔸🔸🔸🔸🔸🔸🔸🔸

[codecov]

Codecov Report

Merging #279 (598d30d) into main (783d087) will increase coverage by 0.14%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #279      +/-   ##
==========================================
+ Coverage   85.44%   85.59%   +0.14%     
==========================================
  Files          10       10              
  Lines         962      972      +10     
==========================================
+ Hits          822      832      +10     
  Misses        140      140              

Impacted Files	Coverage Δ
src/Utility.cc	82.56% <100.00%> (+0.27%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 783d087...598d30d. Read the comment docs.