Add Groovy files to VS Code file associations

Signed-off-by: Pedro Pombeiro <pombeirp@users.noreply.github.com>

.vscode/settings.json

@@ -0,0 +1,10 @@
+{
+  "files.associations": {
+    "*.android": "groovy",
+    "*.ios": "groovy",
+    "*.linux": "groovy",
+    "*.macos": "groovy",
+    "*.windows": "groovy",
+    "*.nix-cache": "groovy",
+  },
+}