fix contributor tag category

e621_api_cloner.py

@@ -97,6 +97,7 @@ class Post:
 class TagCategory(enum.IntEnum):
     GENERAL = 0
     ARTIST = 1
+    CONTRIBUTOR = 2
     COPYRIGHT = 3
     CHARACTER = 4
     SPECIES = 5
@@ -108,6 +109,7 @@ class TagCategory(enum.IntEnum):
         return {
             self.GENERAL: "general",
             self.ARTIST: "artist",
+            self.CONTRIBUTOR: "contributor",
             self.COPYRIGHT: "copyright",
             self.CHARACTER: "character",
             self.METADATA: "meta",