Display group milestones on the Releases page

Problem to solve

To complete #121476 (closed), we'll want to display group milestones associated with each release on the release page. The group milestone info should link to the milestone URL. The progress bar should account for issue completion in each milestone.

Intended users

• Rachel (Release Manager)

User experience goal

The user should be able to see what group milestones a release is associated with.

Proposal

After the completion of #232520 (closed), use the Group milestone API to populate release_block.vue with group milestone info.

Here is the propose design: #121476[group-milestone-5.png]

Further details

This benefits the completion of #121476 (comment 384809928)