Move playbooks to plugin (#23732)

* Remove build references

* Remove playbooks webapp and server, and add the prepackaged plugin

* Remove translations

* Add ProductSettings to the playwright type

* Restore playbooks as a prepackaged plugin for cypress e2e tests

server/public/plugin/environment.go

@@ -104,7 +104,6 @@ func scanSearchPath(path string) ([]*model.BundleInfo, error) {
 }
 
 var pluginIDBlocklist = map[string]bool{
-	"playbooks": true,
 	"com.mattermost.plugin-incident-response":   true,
 	"com.mattermost.plugin-incident-management": true,
 }