refact: openapi splitted into separate files

api/schemas/_index.yaml

@@ -0,0 +1,26 @@
+CursorObj:
+  $ref: ./CursorObj.yaml
+TitleSort:
+  $ref: "./TitleSort.yaml"
+Image:
+  $ref: "./Image.yaml"
+TitleStatus:
+  $ref: "./enums/TitleStatus.yaml"
+ReleaseSeason:
+  $ref: "./enums/ReleaseSeason.yaml"
+UserTitleStatus:
+  $ref: "./enums/UserTitleStatus.yaml"
+Review:
+  $ref: "./Review.yaml"
+Tag:
+  $ref: "./Tag.yaml"
+Tags:
+  $ref: "./Tags.yaml"
+Studio:
+  $ref: "./Studio.yaml"
+Title:
+  $ref: "./Title.yaml"
+User:
+  $ref: "./User.yaml"
+UserTitle:
+  $ref: "./UserTitle.yaml"