Allow disabling voice channel message purge

Author: Erisa

Structs.cs

@@ -295,6 +295,9 @@ public class ConfigJson
 
         [JsonProperty("lokiServiceName")]
         public string LokiServiceName { get; private set; } = null;
+
+        [JsonProperty("voiceChannelPurge")]
+        public bool VoiceChannelPurge { get; private set; } = true;
     }
 
     public enum Level { Information, Warning, Error, Debug, Verbose }

config.json

@@ -319,5 +319,6 @@
   "autoWarnMsgAutoDeleteDays": 3,
   "logLevel": "Debug",
   "lokiURL": "http://100.79.19.82:3100",
-  "lokiServiceName": "cliptok"
+  "lokiServiceName": "cliptok",
+  "voiceChannelPurge":  true
 }