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

webapp/platform/types/src/config.ts

@@ -82,7 +82,6 @@ export type ClientConfig = {
     EnableOAuthServiceProvider: string;
     EnableOpenServer: string;
     EnableOutgoingWebhooks: string;
-    EnablePlaybooks: string;
     EnablePostIconOverride: string;
     EnablePostUsernameOverride: string;
     EnablePreviewFeatures: string;
@@ -819,7 +818,6 @@ export type JobSettings = {
 };
 
 export type ProductSettings = {
-    EnablePlaybooks: boolean;
 };
 
 export type PluginSettings = {