feat(FN-5557): add join import in resolver and project command

Fixes FN-5557 by adding a missing `join` import to both `project-resolver.ts` and the project command handler, resolving an import error in the CLI package.

Fusion-Task-Id: FN-5557

Co-authored-by: Fusion (runfusion.ai) <noreply@runfusion.ai>
Fusion-Task-Id: FN-5557

packages/cli/src/project-resolver.ts

@@ -9,7 +9,7 @@
  */
 
 import { existsSync, statSync } from "node:fs";
-import { basename, dirname, resolve, normalize } from "node:path";
+import { basename, dirname, join, normalize, resolve } from "node:path";
 import { createInterface } from "node:readline/promises";
 import {
   CentralCore,