Merge branch 'master' into OZG-6300-OZG-6417-Zusammarbeit-E2E

...-e2e/src/e2e/main-tests/postfach-mail/postfach-mail.cy.ts

...tests/postfach-mail/postfach-nachricht-reply-button.cy.ts

alfa-client/apps/alfa-e2e/src/fixtures/vorgang/vorgang.json

alfa-client/apps/alfa-e2e/src/model/vorgang.ts

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

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

...n-date-container/beschieden-date-container.component.html

alfa-client/libs/collaboration/.eslintrc.json

alfa-client/libs/collaboration/README.md

alfa-client/libs/collaboration/jest.config.ts

alfa-client/libs/collaboration/project.json

alfa-client/libs/collaboration/src/index.ts

...ntainer/collaboration-in-vorgang-container.component.html

...iner/collaboration-in-vorgang-container.component.spec.ts

...container/collaboration-in-vorgang-container.component.ts

...t/libs/collaboration/src/lib/collaboration.module.spec.ts

...client/libs/collaboration/src/lib/collaboration.module.ts

alfa-client/libs/collaboration/src/test-setup.ts

alfa-client/libs/collaboration/tsconfig.json

alfa-client/libs/collaboration/tsconfig.lib.json