Wrap nested_dask reduce

[smcguire-cmu]

Adds the reduce function to the Catalog class, wrapping the reduce function in nd.NestedFrame

Fixes #420 and fixes #372

[dougbrn]

This looks good, I have one question that I would not consider a blocker and more just curiosity.

[codecov]

Codecov Report

Attention: Patch coverage is 96.77419% with 1 line in your changes missing coverage. Please review.

Project coverage is 97.92%. Comparing base (76e2af4) to head (b613df7).
Report is 13 commits behind head on development.

Files with missing lines	Patch %	Lines
src/lsdb/catalog/catalog.py	80.00%	1 Missing ⚠️

Additional details and impacted files

@@               Coverage Diff               @@
##           development     #414      +/-   ##
===============================================
- Coverage        97.94%   97.92%   -0.03%     
===============================================
  Files               44       44              
  Lines             1560     1591      +31     
===============================================
+ Hits              1528     1558      +30     
- Misses              32       33       +1     

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[github-actions]

Before [c478401]	After [3c3231c]	Ratio	Benchmark (Parameter)
failed	failed	n/a	benchmarks.time_box_filter_on_partition
1.73±0.02s	1.76±0.02s	1.02	benchmarks.time_create_midsize_catalog
11.8±0.07s	11.8±0.01s	1.00	benchmarks.time_create_large_catalog
91.5±0.8ms	91.8±1ms	1.00	benchmarks.time_kdtree_crossmatch
26.8±0.2ms	26.3±0.5ms	0.98	benchmarks.time_polygon_search

Click here to view all benchmarks.

[hombit]

Looks cool, thanks! I'd ask for a bit more testing if it wouldn't take a lot of time