add: Added unclaimed waifu decay to gambling.yml

fix: Fixed regular decay. It was doing the opposite of what the comment says. All waifu decays will be reset

src/NadekoBot/Modules/Gambling/GamblingConfigService.cs

@@ -174,7 +174,7 @@ public sealed class GamblingConfigService : ConfigServiceBase<GamblingConfig>
                 c.Version = 5;
             });
         }
-        
+
         if (data.Version < 6)
         {
             ModifyConfig(c =>
@@ -190,5 +190,14 @@ public sealed class GamblingConfigService : ConfigServiceBase<GamblingConfig>
                 c.Version = 7;
             });
         }
+
+        if (data.Version < 8)
+        {
+            ModifyConfig(c =>
+            {
+                c.Version = 8;
+                c.Waifu.Decay.UnclaimedDecayPercent = 0;
+            });
+        }
     }
 }