Add custom build backend for parallel NetCDF4 #406

Job	Run time
Build ubuntu-22.04 (x86_64) wheels	6m 1s
Build ubuntu-24.04-arm (aarch64) wheels	9m 28s
Build wheels for AMD64 on windows-latest	14m 33s
Build wheels for ARM64 on Windows	1m 58s
Build wheels for x86_64 on macos-15-intel	12m 41s
Build wheels for arm64 on macos-14	8m 29s
Build source distribution	45s
Publish to PyPI	0s
Show artifacts	-1s
Build wheels for ARM64 on Windows	19m 13s
Build wheels for arm64 on macos-14	8m 29s
Build wheels for x86_64 on macos-15-intel	12m 41s
Build ubuntu-22.04 (x86_64) wheels	6m 1s
Build ubuntu-24.04-arm (aarch64) wheels	9m 28s
Build source distribution	45s
Build wheels for AMD64 on windows-latest	14m 33s
Show artifacts	12s
Publish to PyPI	-1s
	2h 5m 15s

Provide feedback