OZG-5012 extract get to resource loader; move reducer configuration

...ient/libs/admin-settings/src/lib/admin-settings.module.ts

...s/src/lib/configuration/configuration-resource.service.ts

...min-settings/src/lib/configuration/configuration.state.ts

...in-settings/src/lib/postfach/postfach-resource.service.ts

...nt/libs/admin-settings/src/lib/postfach/postfach.state.ts

...t/libs/bescheid-shared/src/lib/+state/bescheid.reducer.ts

...ent/libs/bescheid-shared/src/lib/bescheid.service.spec.ts

alfa-client/libs/bescheid-shared/src/lib/bescheid.service.ts

...t/libs/command-shared/src/lib/command-resource.service.ts

alfa-client/libs/tech-shared/src/index.ts

alfa-client/libs/tech-shared/src/lib/ngrx/actions.ts

...t/libs/tech-shared/src/lib/ngrx/resource.state.service.ts

...libs/tech-shared/src/lib/resource/api-resource.service.ts

...ibs/tech-shared/src/lib/resource/list-resource.service.ts

...lient/libs/tech-shared/src/lib/resource/resource.model.ts

...ibs/tech-shared/src/lib/resource/resource.service.spec.ts

...ent/libs/tech-shared/src/lib/resource/resource.service.ts