feat(cli): use dynamic version retrieval

- Replace hardcoded version with dynamic retrieval using `getVersion`
- Improves maintainability by avoiding manual version updates

src/cli/main.ts

@@ -1,9 +1,10 @@
 import { Command } from '@cliffy/command';
 import { createCommand } from './create.ts';
+import { getVersion } from '../utils/mod.ts';
 
 await new Command()
     .name('systemd-timer')
-    .version('0.1.0')
+    .version(await getVersion())
     .description('CLI Tool zum Erzeugen von systemd .timer und .service Units')
     .command('create', createCommand)
     .parse(Deno.args);