Add an user management page for admins

internal/dto/out.go

@@ -73,3 +73,16 @@ type CollectionListBookItemGet struct {
 	Title     string `json:"title"`
 	CoverPath string `json:"coverPath"`
 }
+
+type UsersGet struct {
+	Count int64     `json:"count"`
+	Users []UserGet `json:"users"`
+}
+
+type UserGet struct {
+	ID              uint   `json:"id"`
+	Name            string `json:"name"`
+	Admin           bool   `json:"admin"`
+	AddedBooksCount int64  `json:"addedbookscount"`
+	UserBooksCount  int64  `json:"userbookscount"`
+}