* Create product variations filter component
* Add slug to the product and variation attributes
This is needed to be able to filter variations by specific attribute slugs
* Add support to filter variations by many attribute options
* Integrate attribute options filter in variations table
* Fix rebase conflicts
* Set initial filter values
* Improve intial filter values and cache invalidation
* Add changelog files
* Fix linter errors
* Fix unit tests
* Change the min amount of options to show the search input
* Fix invalid cache key generation for the datastore
* Fix unit tests
* Fix linter errors
* Fix js tests
* Add terms pagination for varition filters
* Load terms on demand plus pagination
* Show selected option names as the dropdown button toggle text
* Fix invalida state when reset and on close the popover
* Revert adding selected options as part of the dropdown toggle text
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Co-authored-by: Fernando Marichal <ultimoround@gmail.com>