OZG-6731 OZG 6763 refactor user service

...t-container/organisationseinheit-container.component.html

...ontainer/organisationseinheit-container.component.spec.ts

...eit-container/organisationseinheit-container.component.ts

...ionseinheit-form/organisationseinheit-form.component.html

...ationseinheit-form/organisationseinheit-form.component.ts

...nisationseinheit-form/organisationseinheit.formservice.ts

...ionseinheit-list/organisationseinheit-list.component.html

...seinheit-list/organisationseinheit-list.component.spec.ts

...ationseinheit-list/organisationseinheit-list.component.ts

.../organisationseinheit/organisationseinheitService.spec.ts

...c/lib/organisationseinheit/organisationseinheitService.ts

...n/settings/src/lib/user/keycloak.resource.service.spec.ts

.../admin/settings/src/lib/user/keycloak.resource.service.ts

...bs/admin/settings/src/lib/user/user.repository.service.ts

alfa-client/libs/admin/settings/src/lib/user/user.service.ts

.../settings/src/lib/users-roles/userAndRolesService.spec.ts

...admin/settings/src/lib/users-roles/userAndRolesService.ts

...n/settings/src/lib/users-roles/users-roles.component.html

...min/settings/src/lib/users-roles/users-roles.component.ts

.../lib/button-with-spinner/button-with-spinner.component.ts