feature/mx-1702 add utils for field and type analysis

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PR Context

• these are needed in the editor as well as the backend
• so we move them from the backend to common

Added

• contains_only_types to check if fields are annotated as desired
• group_fields_by_class_name utility to simplify filtered model/field lookups
• new parameters to get_inner_types to customize what to unpack

[erichesse]

Looks good. Just two questions remaining.

And on top of that, is removing the stale code in backend already part of a ticket?

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And on top of that, is removing the stale code in backend already part of a ticket?

good point, i created a clean-up ticket: MX-1718

[erichesse]

Almost done just one last question

[erichesse]

Looks good. Personally it's fine for me now, however there is a cve scan error I don't understand.

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Looks good. Personally it's fine for me now, however there is a cve scan error I don't understand.

that was just a connection error to the cve database, i re-ran the job and it's green now