DataGrid improvements

[Mil4n0r]

Checklist
(Check off all the items before submitting)

• Build process is done without errors. All tests pass in the /lib directory.
• Self-reviewed the code before submitting.
• Meets accessibility standards.
• Added/updated documentation to /website as needed.
• Added/updated tests as needed.

Purpose
A clear description of the purpose of the change. Applicable in case this change is not linked to an issue.

Description
The following problems have been addressed:

• Adding the possibility to sort any kind of component based on any criteria.
• Add the possibility to paginate the DataGrid component.
• Fixed the unwanted behavior for draggable columns along with expandable content (When expanding or collapsing the content, the column order would roll back to the initial status)
• Fixed unwanted behavior when toggling a grandchild shown in this quick video:
  grandchild-toggle-demo.webm

[Mil4n0r]

I would like to add many edge cases to both functional and visual tests, I also have to tidy up the current tests that I added.

I also have to update the API with all the documentation required for pagination and the sorting strategy.