OZG-6988 add e2e tests

alfa-client/apps/admin-e2e/docker-compose.yml

...admin-e2e/src/components/statistik/statistik-component.ts

...mponents/statistik/statistik-fields-form.e2e.component.ts

...n-e2e/src/components/statistik/statistik.e2e.component.ts

.../apps/admin-e2e/src/e2e/main-tests/navigation/daria.cy.ts

...apps/admin-e2e/src/e2e/main-tests/navigation/safira.cy.ts

...n-e2e/src/e2e/main-tests/statistik/statistik-fields.cy.ts

alfa-client/apps/admin-e2e/src/support/cypress-helper.ts

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

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