OZG-531 load pending commands, spinner for pending commands

goofy-client/libs/command-shared/src/lib/command.linkrel.ts

goofy-client/libs/command-shared/src/lib/command.model.ts

...nt/libs/command-shared/src/lib/command.repository.spec.ts

...-client/libs/command-shared/src/lib/command.repository.ts

goofy-client/libs/command-shared/src/lib/command.service.ts

goofy-client/libs/command-shared/test/command.ts

...ge/vorgang-detail-area/vorgang-detail-area.component.html

...page/vorgang-detail-area/vorgang-detail-area.component.ts

...ib/vorgang-detail-page/vorgang-detail-page.component.html

.../lib/vorgang-detail-page/vorgang-detail-page.component.ts

goofy-client/libs/vorgang-shared/src/lib/vorgang.linkrels.ts

...lient/libs/vorgang-shared/src/lib/vorgang.service.spec.ts

goofy-client/libs/vorgang-shared/src/lib/vorgang.service.ts