Add .vscode folder. (#563)

This PR adds a `.vscode` folder with defaults for Oxfmt. This makes it
so that VS Code runs `oxfmt` instead of any other installed code
formatting extensions.

Author: cpojer

.vscode/extensions.json

@@ -0,0 +1,3 @@
+{
+  "recommendations": ["oxc.oxc-vscode"]
+}

.vscode/settings.json

@@ -0,0 +1,22 @@
+{
+  "editor.formatOnSave": true,
+  "files.insertFinalNewline": true,
+  "files.trimFinalNewlines": true,
+  "[javascript]": {
+    "editor.defaultFormatter": "oxc.oxc-vscode"
+  },
+  "[typescriptreact]": {
+    "editor.defaultFormatter": "oxc.oxc-vscode"
+  },
+  "[typescript]": {
+    "editor.defaultFormatter": "oxc.oxc-vscode"
+  },
+  "[json]": {
+    "editor.defaultFormatter": "oxc.oxc-vscode"
+  },
+  "typescript.preferences.importModuleSpecifierEnding": "js",
+  "typescript.reportStyleChecksAsWarnings": false,
+  "typescript.updateImportsOnFileMove.enabled": "always",
+  "typescript.tsdk": "node_modules/typescript/lib",
+  "typescript.experimental.useTsgo": true
+}