Draft: Add designs widget wrapper

What does this MR do and why?

Add designs widget wrapper

Issue: #387552

MR acceptance checklist

Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

GraphQl Query

{
  workItem(id: "gid://gitlab/WorkItem/526") {
    id,
    workItemType {
      id,
      name
    },
    widgets {
      type
      ... on WorkItemWidgetDesigns {
        		__typename,
        designCollection {
        __typename
        copyState
        designs {
          __typename
          nodes {
            __typename
            id
            event
            filename
            notesCount
            image
            imageV432x230
            currentUserTodos(state: pending) {
              __typename
              nodes {
                __typename
                id
              }
            }
          }
        }
        versions {
          __typename
          nodes {
            __typename
            id
            sha
            createdAt
            author {
              __typename
              id
              name
              avatarUrl
            }
          }
        }
      }
      }
    }
  }
}

Response

{
  workItem(id: "gid://gitlab/WorkItem/526") {
    id,
    workItemType {
      id,
      name
    },
    widgets {
      type
      ... on WorkItemWidgetDesigns {
        		__typename,
        designCollection {
        __typename
        copyState
        designs {
          __typename
          nodes {
            __typename
            id
            event
            filename
            notesCount
            image
            imageV432x230
            currentUserTodos(state: pending) {
              __typename
              nodes {
                __typename
                id
              }
            }
          }
        }
        versions {
          __typename
          nodes {
            __typename
            id
            sha
            createdAt
            author {
              __typename
              id
              name
              avatarUrl
            }
          }
        }
      }
      }
    }
  }
}

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

Related to #387552