Add back Category Groups (import from private/category)

msg.proto

@@ -512,6 +512,42 @@ enum Category {
   AI_ML_4 = 10497;
 }
 
+enum Group {
+  GROUP_UNKNOWN = 0;
+  GROUP_ADULT = 1;
+  GROUP_AGGRESSIVE = 2;
+  GROUP_ARTS = 3;
+  GROUP_AUTOMOTIVE = 4;
+  GROUP_BUSINESS = 5;
+  GROUP_CAREERS = 6;
+  GROUP_CRIMINAL_ACTIVITIES = 7;
+  GROUP_DYNAMIC = 8;
+  GROUP_EDUCATION = 9;
+  GROUP_ENTERTAINMENT = 10;
+  GROUP_FAMILY_AND_PARENTING = 11;
+  GROUP_FASHION = 12;
+  GROUP_FINANCE = 13;
+  GROUP_FOOD_AND_DRINK = 14;
+  GROUP_HEALTH = 15;
+  GROUP_HOBBIES_AND_INTERESTS = 16;
+  GROUP_HOME_AND_GARDEN = 17;
+  GROUP_KIDS = 18;
+  GROUP_LIFESTYLE = 19;
+  GROUP_MALICIOUS = 20;
+  GROUP_MISCELLANEOUS = 21;
+  GROUP_NEWS_PORTAL_AND_SEARCH = 22;
+  GROUP_ONLINE_ADS = 23;
+  GROUP_PETS = 24;
+  GROUP_PUBLIC_GOVERNMENT_AND_LAW = 25;
+  GROUP_REAL_ESTATE = 26;
+  GROUP_RELIGION = 27;
+  GROUP_SCIENCE = 28;
+  GROUP_SHOPPING = 29;
+  GROUP_SPORTS = 30;
+  GROUP_TECHNOLOGY = 31;
+  GROUP_TRAVEL = 32;
+}
+
 message Status {
   // The status code, which should be an enum value of [google.rpc.Code][google.rpc.Code].
   int32 code = 1;