First implementation of fetching collections of book managed by user

internal/dto/out.go

@@ -43,3 +43,20 @@ type BookItemGet struct {
 	WantRead            bool   `json:"wantread"`
 	CoverPath           string `json:"coverPath"`
 }
+
+type CollectionItemsGet struct {
+	Count       int64               `json:"count"`
+	Collections []CollectionItemGet `json:"collections"`
+}
+
+type CollectionItemGet struct {
+	ID    uint                    `json:"id"`
+	Name  string                  `json:"name"`
+	Books []CollectionBookItemGet `json:"books"`
+}
+
+type CollectionBookItemGet struct {
+	ID        uint   `json:"id"`
+	Title     string `json:"title"`
+	CoverPath string `json:"coverPath"`
+}