feat(wave3): @mosaic/cli unified CLI entry point (#9)

Co-authored-by: Jason Woltje <[email protected]>
Co-committed-by: Jason Woltje <[email protected]>

packages/cli/bin/mosaic.ts

@@ -0,0 +1,5 @@
+#!/usr/bin/env node
+
+import { rootCommand } from '../src/root-command.js';
+
+rootCommand.parseAsync(process.argv);