style: add vscode extensions recommendation

Soumya Mahunt · Soumya Mahunt · commit 4f021fbfa75d · 2022-03-27T10:50:38.000+05:30
diff --git a/.vscode/extensions.json b/.vscode/extensions.json
@@ -0,0 +1,6 @@
+{
+  "recommendations": [
+    "castwide.solargraph",
+    "rebornix.ruby"
+  ]
+}
