OZG-7707 Replace one icon from admin client

alfa-client/apps/admin/project.json

alfa-client/apps/admin/src/main.ts

alfa-client/apps/demo/src/app/app.component.html

alfa-client/apps/demo/src/app/app.component.spec.ts

...ns-einheit-list/organisations-einheit-list.component.html

...einheit-list/organisations-einheit-list.component.spec.ts

...ions-einheit-list/organisations-einheit-list.component.ts

alfa-client/libs/design-system/src/assets/admin-logo.svg

alfa-client/libs/design-system/src/assets/delete.svg

...nt/libs/design-system/src/lib/icon/icon.component.spec.ts

...-client/libs/design-system/src/lib/icon/icon.component.ts