[IMPROVE] Add default permission 'start-discussion' and 'start-discussion-other-user' to app user (#22577)

Co-authored-by: Diego Sampaio <chinello@gmail.com>

app/discussion/server/permissions.js

@@ -5,8 +5,8 @@ import { Permissions } from '../../models';
 Meteor.startup(() => {
 	// Add permissions for discussion
 	const permissions = [
-		{ _id: 'start-discussion', roles: ['admin', 'user', 'guest'] },
-		{ _id: 'start-discussion-other-user', roles: ['admin', 'user', 'owner'] },
+		{ _id: 'start-discussion', roles: ['admin', 'user', 'guest', 'app'] },
+		{ _id: 'start-discussion-other-user', roles: ['admin', 'user', 'owner', 'app'] },
 	];
 
 	for (const permission of permissions) {

app/migrations/server/migrations.d.ts

@@ -0,0 +1,8 @@
+export declare const Migrations: {
+	add(migration: {
+		version: number;
+		name?: string;
+		up: () => void;
+		down?: () => void;
+	}): void;
+};

server/startup/migrations/index.js

@@ -226,4 +226,5 @@ import './v226';
 import './v227';
 import './v228';
 import './v229';
+import './v230';
 import './xrun';

server/startup/migrations/v230.ts

@@ -0,0 +1,12 @@
+import { Migrations } from '../../../app/migrations/server';
+import { Permissions } from '../../../app/models/server';
+
+const roleName = 'app';
+
+Migrations.add({
+	version: 230,
+	up() {
+		Permissions.update({ _id: 'start-discussion' }, { $addToSet: { roles: roleName } });
+		Permissions.update({ _id: 'start-discussion-other-user' }, { $addToSet: { roles: roleName } });
+	},
+});