Fix vcoordfiles duplicates; fix unit_conversion

pycif/plugins/datastreams/fields/netcdf_cams/read.py

pycif/plugins/datastreams/fluxes/GCP_1x1/utils.py

pycif/plugins/models/lmdz/__init__.py

pycif/plugins/models/lmdz/ini_mapper.py

pycif/plugins/models/lmdz/io/native2inputs_adj.py

...ators/standard/transforms/init_control_transformations.py

pycif/plugins/transforms/basic/families/adjoint.py

...orms/basic/vertical_interpolation/utils/vcoordfromfile.py