Index search and unit test data

[delucchi-cmu]

Part of issue #108 .

Adds catalog search mechanism to restrict based on values in an IndexCatalog.

[github-actions]

Before [2ec29db]	After [04b833a]	Ratio	Benchmark (Parameter)
12.8±0.1ms	12.9±0.3ms	1.01	benchmarks.time_polygon_search
31.6±0.2ms	31.6±0.5ms	1	benchmarks.time_kdtree_crossmatch

Click here to view all benchmarks.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (2ec29db) 98.47% compared to head (702682b) 98.50%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #123      +/-   ##
==========================================
+ Coverage   98.47%   98.50%   +0.03%     
==========================================
  Files          31       32       +1     
  Lines         785      801      +16     
==========================================
+ Hits          773      789      +16     
  Misses         12       12              

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