leveldb-rs-binding 2.2.0

An interface for the LevelDB
Documentation
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# Why we need this PR
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# Summary of Changes
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# How Has This Been Tested?
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# Checklist
- [ ] All tests pass locally (`cargo test`)
- [ ] Examples compile and run correctly
- [ ] No new warnings introduced
- [ ] Tests (if applicable) are added / updated to prove my change works
- [ ] Docs (if applicable) are updated
- [ ] CHANGELOG.md (if applicable) is updated

# Additional Notes
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