chore: Add vscode configuration (#1399)

.gitignore

@@ -6,7 +6,6 @@
 .webextrc
 .wxt
 *.log
-/.vscode/
 /docs/.vitepress/cache
 coverage
 dist

.vscode/extensions.json

@@ -0,0 +1,7 @@
+{
+  "recommendations": [
+    "davidanson.vscode-markdownlint",
+    "esbenp.prettier-vscode",
+    "github.vscode-github-actions"
+  ]
+}

.vscode/settings.json

@@ -0,0 +1,14 @@
+{
+  // Set default formatter
+  "editor.defaultFormatter": "esbenp.prettier-vscode",
+
+  "[json]": { "editor.defaultFormatter": "esbenp.prettier-vscode" },
+  "[yaml]": { "editor.defaultFormatter": "esbenp.prettier-vscode" },
+  "[typescript]": { "editor.defaultFormatter": "esbenp.prettier-vscode" },
+  "[markdown]": { "editor.defaultFormatter": "esbenp.prettier-vscode" },
+
+  // Additional guidelines for Copilot
+  "github.copilot.chat.codeGeneration.instructions": [
+    { "file": "CONTRIBUTING.md" }
+  ]
+}