Processes `HQP_MQQ` and `INC` are not implemented in `process_options`

[scarlehoff]

The process HQP_MQQ is currently being used by a number of datasets (e.g.,

nnpdf/nnpdf_data/nnpdf_data/new_commondata/ATLAS_TTBAR_13TEV_LJ_DIF/metadata.yaml

Line 22 in 9777baf

process_type: HQP_MQQ

)

but it is not implemented in
https://github.com/NNPDF/nnpdf/blob/master/validphys2/src/validphys/process_options.py

Also INC (used for instance in:

nnpdf/nnpdf_data/nnpdf_data/new_commondata/ATLAS_TTBAR_13TEV_TOT/metadata.yaml

Line 20 in 9777baf

process_type: INC

) should be added, otherwise the results won't probably be correct.

The exception corresponding to this issue in test_all_datasets should be removed before this is closed