feat: expose SessionContext.write_csv, write_json, write_parquet #508

Job	Run time
build / lint-toml	8s
build / lint-python	9s
build / generate-license	2m 14s
build / lint-rust	2m 6s
build / check-crates-patch	-1s
build / Linux arm64 (3.13t)	12m 8s
build / Linux x86_64 (3.14t)	14m 27s
build / Linux arm64 (abi3)	12m 19s
build / macOS arm64 (3.13t)	9m 46s
build / macOS arm64 (3.14t)	8m 49s
build / Windows x86_64 (3.13t)	17m 20s
build / Linux arm64 (3.14t)	12m 8s
build / Windows x86_64 (abi3)	16m 55s
build / macOS arm64 (abi3)	11m 12s
build / Linux x86_64 (abi3)	20m 45s
build / Windows x86_64 (3.14t)	15m 40s
build / Linux x86_64 (3.13t)	13m 58s
build / macOS x86_64 (${{ matrix.python-tag }})	0s
build / Source distribution	0s
build / Build docs	1m 2s
build / Merge build artifacts	0s
test / test-matrix (3.12, abi3, false)	4m 33s
test / test-matrix (3.10, abi3, false)	4m 3s
test / test-matrix (3.14t, 3.14t, true)	2m 58s
test / test-matrix (3.14, abi3, false)	4m 43s
test / test-matrix (3.11, abi3, false)	4m 3s
test / test-matrix (3.13t, 3.13t, true)	54s
test / test-matrix (3.13, abi3, false)	4m 9s
	3h 16m 28s

Provide feedback