OZG-5981 OZG-6022 Add download button

...ary-file-list/vertical-binary-file-list.component.spec.ts

alfa-client/libs/design-component/src/index.ts

...src/lib/download-button/download-button.component.spec.ts

...nent/src/lib/download-button/download-button.component.ts

alfa-client/libs/design-system/src/index.ts

.../lib/attachment-container/attachment-container.stories.ts

...ent/libs/design-system/src/lib/button/button.component.ts

...lient/libs/design-system/src/lib/button/button.stories.ts

...rc/lib/icons/attachment-icon/attachment-icon.component.ts

...escheid-generate-icon/bescheid-generate-icon.component.ts

...ns/bescheid-upload-icon/bescheid-upload-icon.component.ts

...n-system/src/lib/icons/close-icon/close-icon.component.ts

.../lib/icons/exclamation-icon/exclamation-icon.component.ts

alfa-client/libs/design-system/src/lib/icons/iconVariants.ts

...ign-system/src/lib/icons/save-icon/save-icon.component.ts

...ign-system/src/lib/icons/send-icon/send-icon.component.ts

...stem/src/lib/icons/spinner-icon/spinner-icon.component.ts

...n-system/src/lib/icons/stamp-icon/stamp-icon.component.ts