chore: add amour1688.ts-in-markdown as recommended vscode extension

Author: ulivz

Diff for: .gitignore

@@ -11,7 +11,6 @@ node_modules
 TODOs.md
 
 # Editors
-.vscode
 .idea
 
 # VuePress temp directory

Diff for: .vscode/extensions.json

@@ -0,0 +1,5 @@
+{
+  "recommendations": [
+    "amour1688.ts-in-markdown",
+  ]
+}