cli-module-new: add template for CLI module packages

Add a new `cli-module` template to the Backstage CLI that scaffolds
CLI module packages. This includes adding the `cli-module` role to the
template system, with proper naming conventions and prompts.

The generated package includes:
- A bin entry point for standalone execution
- An index.ts with createCliModule setup
- An example command using cleye
- Standard package.json with cli-module role

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

.changeset/add-cli-module-template-support.md

@@ -0,0 +1,5 @@
+---
+'@backstage/cli-module-new': patch
+---
+
+Added support for the `cli-module` template role for scaffolding new CLI module packages.

.changeset/add-cli-module-template.md

@@ -0,0 +1,5 @@
+---
+'@backstage/cli': patch
+---
+
+Added a new `cli-module` template for creating CLI module packages.