Introduce command to run no-workspace tests separately

This takes down the feedback loop from 5-10 seconds to half a second
since we're not running through the setup for minimal workspace tests.

Author: elenatanasoiu

extensions/ql-vscode/package.json

@@ -1258,6 +1258,7 @@
     "test:view": "jest",
     "preintegration": "rm -rf ./out/vscode-tests && gulp",
     "integration": "node ./out/vscode-tests/run-integration-tests.js no-workspace,minimal-workspace",
+    "no-workspace": "node ./out/vscode-tests/run-integration-tests.js no-workspace",
     "cli-integration": "npm run preintegration && node ./out/vscode-tests/run-integration-tests.js cli-integration",
     "update-vscode": "node ./node_modules/vscode/bin/install",
     "format": "tsfmt -r && eslint . --ext .ts,.tsx --fix",