feat(hashing): tokenized snapshot

[dlovell]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

Files with missing lines	Coverage Δ
python/xorq/caching/__init__.py	93.70% <100.00%> (+0.47%)	⬆️
python/xorq/tests/test_ls_accessor.py	100.00% <100.00%> (ø)
python/xorq/vendor/ibis/expr/types/core.py	85.24% <100.00%> (+0.24%)	⬆️

... and 1 file with indirect coverage changes

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[codspeed-hq]

CodSpeed Performance Report

Merging #1340 will not alter performance

_{Comparing feat/hashing/tokenized-snapshot (e7c8bc5) with main (df01e91)}

Summary

✅ 3 untouched

[dlovell]

per discussion with @hussainsultan , we might want to default hashing to use the "snapshot" version and only invoke the more involved modification time strategy hashing when explicitly needed by a cache key calculation