Enable compiler option skipLibCheck in TypeScript based templates

This is done to prevent compile errors due to @types/node clashing with
tabris type declarations. This can be considered a workaround, as
tabris really shouldn't clash with node, but it's also in general a
good compiler option to enable.

Change-Id: I88b1d6e6997bd2bef23144125443a1aebe0ed46d

app/templates-3.x/ts/tsconfig.json

@@ -16,7 +16,8 @@
     "experimentalDecorators": true,
     "emitDecoratorMetadata": true,
     "allowJs": true,
-    "typeRoots": ["node_modules/@types"]
+    "typeRoots": ["node_modules/@types"],
+    "skipLibCheck": true
   },
   "include": [
     "./src/**/*.ts",