feat(@api-hooks/gh): useGhAddGistComment(gistId) / useGhUpdateGistComment(gistId) / useGhDeleteGistComment(gistId)

[ElJijuna]

Hooks

• `useGhAddGistComment(gistId)`
• `useGhUpdateGistComment(gistId)`
• `useGhDeleteGistComment(gistId)`

Client methods

• `client.gist(gistId).addComment(data)` → `GistComment`
• `client.gist(gistId).updateComment(commentId, data)` → `GistComment`
• `client.gist(gistId).deleteComment(commentId)` → `void`

Notes

Mutation hooks for gist comment CRUD.

Invalidate: `ghQueryKeys.gistComments(gistId)` on success.