message: create-stylable-app: update to upstream tsconfig
  As of `tsc --init` sets "skipLibCheck" to true by default.
  Template project now follows suit, making "typecheck" a bit faster.
diff: {
  "compilerOptions": {
  + /* Visit https://aka.ms/tsconfig.json to read more about this file */
  +
  /* Basic Options */
  // "incremental": true, /* Enable incremental compilation */
  "target": "es2019", /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */
  // "emitDecoratorMetadata": true, /* Enables experimental support for emitting type metadata for decorators. */
  /* Advanced Options */
  + "skipLibCheck": true, /* Skip type checking of declaration files. */
  "forceConsistentCasingInFileNames": true /* Disallow inconsistently-cased references to the same file. */
  }
  }
  