Custom renderers and quick-filters injection in FeatureEditor plugin by other plugins

[offtherailz]

Description

Acceptance Criteria

As a developer, I want to develop plugins that add some custom renderers to be used in all the cells of a given column of a given feature of the feature grid, and some custom quick filter tools to be used in the hader of a given column for a given feature. Actually this is supported only for editors, and they have to be registered using a proper Javascript utility. With this improvement also the editor could be injectable with the same logic.

• I want that this renderer is available for use in general (e.g. for general purpose renderers and filters)
• I want to be able to configure also the plugin with rules similar to the custom editor, to use these renderers/filters using regular expressions to recognize feature types, URL and column names.
• I want to be able configure in layer fields to use these renderer and filter, when available, in the feature grid ( at least by editing configuration, without UI )

Specific implementations

With this we want to provide support for custom project to some features like:

• Show JSON attributes (represented as text by the describeFeatureType) in a clickable popup, that shows all the fields (for the particular project we will have some information about the structure of the JSON).
• Allow to filter these JSON attributes using CQL filters (e.g. jsonArrayContains(...), jsonPointer(...) in the column.

What kind of improvement you want to add? (check one with "x", remove the others)

• Minor changes to existing features
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Other... Please describe:

Other useful information

This is a feature that interest only custom projects. There should not be any UI change to explicitly test.