harmonize project status codes for isometric

[andersy005]

• related to harmonize project status codes for cercarbano #145,

we need to harmonize the project status codes for isometric projects. the raw data contains the following statuses

In [57]: df.status.unique()
Out[57]: 
array(['under_validation', 'validated', 'validation_unsuccessful'],
      dtype=object)

Cc @badgley

[badgley]

i'll take this one — might even revisit how we do for the other registries. this was one of those 'oh we'll get back to this eventually' tasks.