Allow custom filter components for paginated data table.

[dennisoelkers]

Description

Motivation and Context

This PR is introducing the filter_component attribute for entities used by the paginated data table. This allows specifying custom components used for rendering a filter for this attribute. Obviously, this only works for attributes which are defined/extended in the frontend, not for backend definitions of attributes, as these cannot reference React components. The main use of this is to specify custom ways for filters in plugins.

/nocl Internal functionality.

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Refactoring (non-breaking change)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.