FEATURE: Add scopes to API keys (#9844)

* Added scopes UI

* Create scopes when creating a new API key

* Show scopes on the API key show route

* Apply scopes on API requests

* Extend scopes from plugins

* Add missing scopes. A mapping can be associated with multiple controller actions

* Only send scopes if the use global key option is disabled. Use the discourse plugin registry to add new scopes

* Add not null validations and index for api_key_id

* Annotate model

* DEV: Move default mappings to ApiKeyScope

* Remove unused attribute and improve UI for existing keys

* Support multiple parameters separated by a comma

lib/plugin/instance.rb

@@ -738,6 +738,10 @@ class Plugin::Instance
     end
   end
 
+  def add_api_key_scope(resource, action)
+    DiscoursePluginRegistry.register_api_key_scope_mapping({ resource => action }, self)
+  end
+
   protected
 
   def self.js_path