Add Margin Catalog

[smcguire-cmu]

Change Description

Adds the MarginCatalog class to represent a margin cache catalog. This uses the HealpixDataset base class and specifies the corresponding catalog info type. Removes margin as an option for the catalog type of a base Catalog

• My PR includes a link to the issue that I am addressing

New Feature Checklist

• I have added or updated the docstrings associated with my feature using the NumPy docstring format
• I have added unit/End-to-End (E2E) test cases to cover my new feature
• My change includes a breaking change
  • My change includes backwards compatibility and deprecation warnings (if possible)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (ffa8352) 99.72% compared to head (d3237da) 100.00%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main      #199      +/-   ##
===========================================
+ Coverage   99.72%   100.00%   +0.27%     
===========================================
  Files          53        54       +1     
  Lines        1811      1844      +33     
===========================================
+ Hits         1806      1844      +38     
+ Misses          5         0       -5     

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[github-actions]

Before [3a77c01]	After [bacbe89]	Ratio	Benchmark (Parameter)
326±5ms	292±20ms	~0.89	benchmarks.MetadataSuite.time_load_partition_info_order6
645±4ms	656±9ms	1.02	benchmarks.Suite.time_pixel_tree_creation
1.15±0s	1.16±0s	1.01	benchmarks.MetadataSuite.time_load_partition_info_order7
1.89±0.01s	1.90±0.01s	1.01	benchmarks.MetadataSuite.time_load_partition_join_info
98.4±0.8ms	99.7±2ms	1.01	benchmarks.time_test_cone_filter_multiple_order
126±2ms	124±0.3ms	0.98	benchmarks.time_test_alignment_even_sky

Click here to view all benchmarks.

[delucchi-cmu]

If the suggestion is ok, then this is approved.