* Add noServices option to HookContainer::run()
* Use the option for LoadExtensionSchemaUpdates
* Document service injection including the caveats we know about
Bug: T258851
Change-Id: Ie57f2a3aeeea883f392e3c83ff228d1de68c6ebf
Integration test for HookContainer.
Tests that hook handlers registered in extension.json
and through HookContainer::register() are executed.
Bug: T251444
Change-Id: I552ae606794d4482f7e8a4b0b67fd35b302e43f8