feat(auth): add email verification page

src/app/app-routing.module.ts

src/app/app.module.ts

src/app/services/auth.service.ts

src/app/user-verification/user-verification.component.html

src/app/user-verification/user-verification.component.scss

...app/user-verification/user-verification.component.spec.ts

src/app/user-verification/user-verification.component.ts