Support pathlib in json encoding

[delucchi-cmu]

Change Description

Related to three downstream issues:

• Support pathlib.Path for CsvReader(schema_file) hats-import#228
• Support pathlib.Path for input_file_list hats-import#160
• Support pathlib.Path as an argument of .to_hipscat lsdb#169

This change will need to be in a tagged release before we can add tests in those repos and consider those issues closed.

Solution Description

Adds a simple JSON encoder with a special case for pathlib.Path. Additional other types can be added there, if they cause problems in JSON writing.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.94%. Comparing base (a051d36) to head (d8f6ac6).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #219   +/-   ##
=======================================
  Coverage   99.94%   99.94%           
=======================================
  Files          57       57           
  Lines        1976     1981    +5     
=======================================
+ Hits         1975     1980    +5     
  Misses          1        1           

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[github-actions]

Before [a051d36]	After [252cf0c]	Ratio	Benchmark (Parameter)
124±0.4ms	125±2ms	1.01	benchmarks.time_test_alignment_even_sky
80.2±0.7ms	80.3±0.3ms	1	benchmarks.MetadataSuite.time_load_partition_info_order7
80.1±0.7ms	80.4±0.7ms	1	benchmarks.MetadataSuite.time_load_partition_join_info
642±2ms	643±6ms	1	benchmarks.Suite.time_pixel_tree_creation
20.1±0.3ms	19.9±0.1ms	0.99	benchmarks.MetadataSuite.time_load_partition_info_order6
99.7±0.4ms	96.7±0.5ms	0.97	benchmarks.time_test_cone_filter_multiple_order

Click here to view all benchmarks.

[hombit]

Thank you!