Phase 1+2: Nx workspace with apps, libs, and module boundaries

libs/api-interfaces/src/lib/api-interfaces.spec.ts

@@ -0,0 +1,7 @@
+import { apiInterfaces } from './api-interfaces';
+
+describe('apiInterfaces', () => {
+  it('should work', () => {
+    expect(apiInterfaces()).toEqual('api-interfaces');
+  });
+});