* WIP: experimenting with strategy pattern for block registration
* Add TemplateChangeDetector to BlocksRegistrationManager
* Handle blocks registration
* Fix issue causing blocks to be registered multiple times
* Allow register/unregister blocks when on pages or posts
* Add BlockRegistrationStrategy logic
* Fix import error
* Add doc comments for BlockRegistrationManager class
* Add doc comments to TemplateChangeDetector class
* Fix eslint errors
* Import domReady from @wordpress/dom-ready
* Prevent error when using blockName for registerBlockType function
* Add e2e tests to check for block availability in different contexts
* Add e2e tests to cover block availability on different contexts