Use int64 for GitHub database IDs and add lint check

Change all struct fields representing GitHub database IDs from int to
int64 to match the API spec and prevent potential overflow on 32-bit
architectures.

Add a custom go/analysis linter (idtype-checker) that flags struct
fields with ID-like names or JSON tags using int instead of int64,
integrated into make lint.

Closes #9247

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

pkg/cmd/cache/delete/delete.go

@@ -147,7 +147,7 @@ func deleteRun(opts *DeleteOptions) error {
 			}
 		}
 		for _, cache := range caches.ActionsCaches {
-			toDelete = append(toDelete, strconv.Itoa(cache.Id))
+			toDelete = append(toDelete, strconv.FormatInt(cache.Id, 10))
 		}
 	} else {
 		toDelete = append(toDelete, opts.Identifier)

pkg/cmd/cache/shared/shared.go

@@ -22,7 +22,7 @@ var CacheFields = []string{
 
 type Cache struct {
 	CreatedAt      time.Time `json:"created_at"`
-	Id             int       `json:"id"`
+	Id             int64     `json:"id"`
 	Key            string    `json:"key"`
 	LastAccessedAt time.Time `json:"last_accessed_at"`
 	Ref            string    `json:"ref"`