Adapt codebase to support new datasets different from JUMP

[sugan89]

Proposed change:

Adapt the following function to ignore JUMP metadata files when there is not source_* sources. Add as an additional param in the JSON file the path to the metadata for non-JUMP sources.

jump-profiling-recipe/preprocessing/metadata.py

Lines 139 to 144 in 0224e0f

	def load_metadata(sources: list[str], plate_types: list[str]):
	"""Load metadata only"""
	plate = get_plate_metadata(sources, plate_types)
	well = get_well_metadata(plate_types)
	meta = well.merge(plate, on=["Metadata_Source", "Metadata_Plate"])
	return meta