refactor: rename Badge to TwitchBadge (#6706)

this change is made to clarify that the previously-called Badge object
is actually specialized for Twitch badges

tests/snapshots/IrcMessageHandler/sub-gift.json

@@ -2,10 +2,6 @@
     "input": "@badges=staff/1,premium/1;color=#0000FF;display-name=TWW2;emotes=;id=e9176cd8-5e22-4684-ad40-ce53c2561c5e;login=tww2;mod=0;msg-id=subgift;msg-param-months=1;msg-param-recipient-display-name=Mr_Woodchuck;msg-param-recipient-id=89614178;msg-param-recipient-name=mr_woodchuck;msg-param-sub-plan-name=House\\sof\\sNyoro~n;msg-param-sub-plan=1000;room-id=19571752;subscriber=0;system-msg=TWW2\\sgifted\\sa\\sTier\\s1\\ssub\\sto\\sMr_Woodchuck!;tmi-sent-ts=1521159445153;turbo=0;user-id=13405587;user-type=staff :tmi.twitch.tv USERNOTICE #pajlada",
     "output": [
         {
-            "badgeInfos": {
-            },
-            "badges": [
-            ],
             "channelName": "",
             "count": 1,
             "displayName": "",
@@ -118,6 +114,10 @@
             "searchText": "TWW2 gifted a Tier 1 sub to Mr_Woodchuck!",
             "serverReceivedTime": "",
             "timeoutUser": "",
+            "twitchBadgeInfos": {
+            },
+            "twitchBadges": [
+            ],
             "userID": "",
             "usernameColor": "#ff000000"
         }