Offer sensible default VSCode settings (#9436)

.vscode/extensions.json

@@ -0,0 +1,35 @@
+// ⚠ Disclaimer: The typeshed team doesn't commit to maintaining this file. It exists purely for your ease of use.
+
+// Keep in alphabetical order
+{
+  "recommendations": [
+    "bierner.github-markdown-preview",
+    "bungcip.better-toml",
+    "editorconfig.editorconfig",
+    "ms-python.black-formatter",
+    "ms-python.flake8",
+    "ms-python.isort",
+    "ms-python.python",
+    "ms-python.vscode-pylance",
+    "redhat.vscode-yaml",
+],
+"unwantedRecommendations": [
+    /*
+     * Don't recommend by default for this workspace
+    */
+    "christian-kohler.npm-intellisense",
+    /*
+     * Must disable in this workspace
+     * https://github.com/microsoft/vscode/issues/40239
+    */
+    // We use black
+    "ms-python.autopep8",
+    // Not using pylint
+    "ms-python.pylint",
+    // VSCode has implemented an optimized version
+    "coenraads.bracket-pair-colorizer",
+    "coenraads.bracket-pair-colorizer-2",
+    // Obsoleted by Pylance
+    "ms-pyright.pyright",
+  ],
+}