feat: add vscode:clean script

ci/dev/reset-vscode.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+main() {
+  cd "$(dirname "$0")/../.."
+
+  cd ./lib/vscode
+  git add -A
+  git reset --hard
+}
+
+main "$@"

package.json

@@ -13,6 +13,7 @@
     "vscode": "./ci/dev/vscode.sh",
     "vscode:patch": "./ci/dev/patch-vscode.sh",
     "vscode:diff": "./ci/dev/diff-vscode.sh",
+    "vscode:reset": "./ci/dev/reset-vscode.sh",
     "build": "./ci/build/build-code-server.sh",
     "build:vscode": "./ci/build/build-vscode.sh",
     "release": "./ci/build/build-release.sh",