Create class for each Edit type

[qgib]

Author Name: Denis Rouzaud (@3nids)
Original Redmine Issue: 7319

Redmine category:vectors
Assignee: Nathan Woodrow

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With addition of editable option for all edit types (#15762), the "immutable" edit type is useless.

Right now, edit types are saved as numbers in the the project. Just removing the immutable edit type, will lead to a switch of one in the list, and will bring a compatibility issue with older project.

Nathan's idea is to create a class for each edit type, with its id (the old enum value) and the 3 methods: createEditor, setValue, getValue.

[qgib]

Author Name: Matthias Kuhn (@m-kuhn)

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Fixed in changeset "ea91b6fe4a21ff741de918a11d0f2a26a291c1e2".

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• status_id was changed from Open to Closed