setup .vscode folder

.vscode/extensions.json

@@ -0,0 +1,15 @@
+{
+  // See https://go.microsoft.com/fwlink/?LinkId=827846
+  // for the documentation about the extensions.json format
+  "recommendations": [
+    "rust-lang.rust-analyzer",
+    "github.copilot",
+    "m4ns0ur.base64",
+    "aaron-bond.better-comments",
+    "yzhang.markdown-all-in-one",
+    "bierner.markdown-mermaid",
+    "hristian-kohler.path-intellisense",
+    "helixquar.randomeverything",
+    "shardulm94.trailing-spaces"
+  ]
+}

.vscode/settings.json

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+{
+  "editor.formatOnSave": true
+}