Enable skipLibCheck in the Angular example

The @nutrient-sdk/viewer 1.16.0 typings fail TS lib checking
(https://nutrient.atlassian.net/browse/WEB-4498), which broke this
example's webserver build in CI. skipLibCheck matches the Angular CLI
default and the posture of the other examples.

Co-Authored-By: The Claudefather <noreply@anthropic.com>

Author: sashamilenkovic

examples/angular/tsconfig.json

@@ -3,6 +3,7 @@
   "compilerOptions": {
     "outDir": "./dist/out-tsc",
     "strict": true,
+    "skipLibCheck": true,
     "noImplicitOverride": true,
     "noPropertyAccessFromIndexSignature": true,
     "noImplicitReturns": true,