Moon frame simplifications + add loading from MetaFile into Almanac

[ChristopherRabotin]

Summary

Fixes #174 . Fixes #180 .

Architectural Changes

• Stabilize ANISE semver in the kernels to version 0.3.0.

New Features

No change

Improvements

• Add MOON_ME_FRAME and MOON_PA_FRAME

Bug Fixes

No change

Testing and validation

• Add loading from MetaFile test

Documentation

• Add documentation for ITRF93, IAU_EARTH, IAU_MOON, MOON_ME, MOON_PA frames.

[ChristopherRabotin]

Reviewed, look good to me. Just adding codecov again

[codecov]

Codecov Report

Attention: 204 lines in your changes are missing coverage. Please review.

Comparison is base (89301ff) 77.14% compared to head (2c2ce28) 79.68%.
Report is 75 commits behind head on master.

Files	Patch %	Lines
anise/src/astro/utils.rs	36.56%	85 Missing ⚠️
anise/src/astro/aberration.rs	74.71%	22 Missing ⚠️
anise/src/almanac/aer.rs	92.48%	13 Missing ⚠️
anise/src/almanac/transform.rs	29.41%	12 Missing ⚠️
anise/src/almanac/metaload/metaalmanac.rs	86.90%	11 Missing ⚠️
anise/src/frames/frame.rs	21.42%	11 Missing ⚠️
anise/src/math/cartesian.rs	71.79%	11 Missing ⚠️
anise/src/naif/pretty_print.rs	87.69%	8 Missing ⚠️
anise/src/ephemerides/translations.rs	92.78%	7 Missing ⚠️
anise/src/almanac/metaload/mod.rs	92.30%	5 Missing ⚠️
... and 8 more

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #186      +/-   ##
==========================================
+ Coverage   77.14%   79.68%   +2.53%     
==========================================
  Files          67       70       +3     
  Lines        7815     8506     +691     
==========================================
+ Hits         6029     6778     +749     
+ Misses       1786     1728      -58     

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