message: Change VS Code watch task to run top-level `tsconfig.json`
diff: "version": "2.0.0",
  "tasks": [
  {
  - "label": "[apollo-language-server] TypeScript watch",
  + "label": "TypeScript watch",
  "type": "shell",
  "command": "./node_modules/.bin/tsc",
  "args": [
  "--build",
  - "./packages/apollo-language-server/tsconfig.json",
  + "./tsconfig.json",
  "--watch"
  ],
  "isBackground": true,
  