* Increase `schema_version` to add the new `wc_blocks_use_blockified_templates` flag
If the schema version stored on the db is <= 260 means the plugin is being updated
to the new version and we should keep using the old templates, not the blockified ones.
* After the theme is switched we check if we need to update the flag to
start loading the blockified templates or not.
* Get the templates from the blockified folder if the flag is set to true on the db
* Add temporary blockified template for testing purposes
* Inline variable
* Improve comment
* Use blockified templates on new installs with block themes only
* Don't use blockified templates when switching to a non FSE theme
* Fix condition
* Add tests for the option value
* Move the check to use blockified templates
* WIP
* WIP
* Add migration strategy
* Move the blockified templates to the templates folder and filter them depending on the option
* Fix tests and start using the Options constants
* Fix migration, the `should_use_blockified_product_grid_templates` and tests
* Rename tests and move to Utils folder
* add Migration class test
* try
* remove PHP
* add composer
* Replace the blockified templates with a temporary version
* Fix tests
* add comment
* Add feature gating for experimental builds
* Inject the package to the controller
* test
* Change blocks.ini
* debug
* Remove debug info
* fix test
* fix tests
* try now
* using composer cache
* install deps
* test
* Remove unnecessary extra key
* Add cache actions
* Undo tests change
* Fix readme format
Co-authored-by: Luigi <gigitux@gmail.com>