Adding gitignore and package.json for installing dependencies

Author: SaraTahir28

implement-shell-tools/.gitignore

@@ -0,0 +1,5 @@
+# Node modules
+node_modules/
+
+# Package lock file (optional)
+package-lock.json

implement-shell-tools/package.json

@@ -0,0 +1,6 @@
+{
+    "type": "module",
+    "dependencies": {
+        "commander": "^14.0.2"
+    }
+}