OZG-6988 implement navigation

alfa-client/apps/admin/src/app/app.routes.ts

...s-form-page/app-statistik-fields-form-page.component.html

...orm-page/app-statistik-fields-form-page.component.spec.ts

...lds-form-page/app-statistik-fields-form-page.component.ts

alfa-client/libs/admin/shared/src/lib/routes.ts

...ib/statistik-container/statistik-container.component.html

...statistik-container/statistik-container.component.spec.ts

.../lib/statistik-container/statistik-container.component.ts

...ik-fields-form/admin-statistik-fields-form.component.html

...fields-form/admin-statistik-fields-form.component.spec.ts

...stik-fields-form/admin-statistik-fields-form.component.ts

...lib/statistik-fields-form/statistik-fields.formservice.ts