Implement XOR Filter

[abigalekim]

Implemented XOR filter, which is a precursor to implementing the LiDaR compressor. Things that are done:

• [x] Implementation of the XORFilter class
• [x] Test cases in test/src/unit-filter-pipeline.cc
• [x] Test cases in unit_filter_create
• [x] CPP API test cases

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TYPE: FEATURE DESC: Implement XOR Filter

[shortcut-integration[bot]]

This pull request has been linked to Shortcut Story #19058: Implement Stavros' Lidar Compressor.

[abigalekim]

@eric-hughes-tiledb , the only thing I can see is the filter_pipeline.md documentation. Do you know where I should make changes to the spec? Overall, there really doesn't seem to be much documentation in the .md files in the format_spec directory.