cli: mark create-github-app as ready for use

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

.changeset/cool-poems-train.md

@@ -0,0 +1,5 @@
+---
+'@backstage/cli': patch
+---
+
+Mark the `create-github-app` command as ready for use and reveal it in the command list.

packages/cli/src/commands/index.ts

@@ -225,10 +225,8 @@ export function registerCommands(program: CommanderStatic) {
     .action(lazy(() => import('./buildWorkspace').then(m => m.default)));
 
   program
-    .command('create-github-app <github-org>', { hidden: true })
-    .description(
-      'Create new GitHub App in your organization. This command is experimental and may change in the future.',
-    )
+    .command('create-github-app <github-org>')
+    .description('Create new GitHub App in your organization.')
     .action(lazy(() => import('./create-github-app').then(m => m.default)));
 }