Add `FieldSet.from_copernicusmarine` #1445

Job	Run time
py3.12 \| ubuntu \| unit tests	4m 55s
py3.11 \| ubuntu \| unit tests	4m 44s
mypy	-1s
py${{ matrix.python-version }} \| ${{ matrix.os }} \| integration tests	-1s
merge-test-artifacts	0s
	9m 37s

Provide feedback