OZG-7707 Add svg icons to assets

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

alfa-client/libs/design-system/src/assets/arrow-back.svg

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

...lient/libs/design-system/src/assets/bescheid-generate.svg

...-client/libs/design-system/src/assets/bescheid-upload.svg

alfa-client/libs/design-system/src/assets/check-circle.svg

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

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

.../libs/design-system/src/assets/delete-vorgang-finally.svg

...-client/libs/design-system/src/assets/discard-vorgang.svg

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

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

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

...-client/libs/design-system/src/assets/forward-vorgang.svg

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

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

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

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

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

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