Add Arrow CSR and ice-disk FLAT relationship layouts

[adsharma]

Summary

• add FLAT/CSR layout handling for Arrow memory relationship tables
• add FLAT layout support for ice-disk relationship tables
• expose Arrow CSR relationship registration through the C API
• update tools/python_api to Add Arrow CSR relationship table Python API ladybug-python#18

Validation

• make test-build-release
• build/release/test/api/api_test --gtest_filter='ArrowRelTableTest.*'
• cmake --build build/release --target lbug_storage_store ice_disk_utils_test -j 8
• build/release/test/storage/ice_disk_utils_test --gtest_filter='IceDiskUtils_*'
• cmake --build build/release --target lbug_c_api c_api_test -j 8
• python3 -m py_compile on touched Python files
• uvx ruff check on touched Python files

[aheev]

Overall looks good. You might want to pull tests from #496. I made an extensive test suite there