Emoji reactions for comments in Design Management
### Release notes
Users can now express their thoughts more creatively by adding emoji reactions to comments in [Design Management](https://docs.gitlab.com/ee/user/project/issues/design_management.html). This feature adds a touch of fun and ease to collaboration, fostering better communication and enabling teams to provide quick feedback in a more expressive way. 🎨📝😄

### Problem to solve
We would like users to be able to award emoji to Annotations on designs.
### Further details
The backend GraphQL work to enable this is captured in these issues:
- https://gitlab.com/gitlab-org/gitlab-ce/issues/62826
- https://gitlab.com/gitlab-org/gitlab-ce/issues/63797
This issue, therefore, represents the design and front-end work in order to
- allow the user to choose an emoji to give to ("award") an Annotation
- display the emojis awarded to Annotations
issue