Allow JSON API commands to send third arg for muting

The mod_conference API supports passing an optional third arg for all
mute commands (mute, unmute, tmute, vmute, unvmute, tvmute). This patch
adds support for the optional third arg to the JSON API.

FS-7882 #resolve

src/mod/applications/mod_conference/conference_event.c

@@ -99,15 +99,19 @@ void conference_event_mod_channel_handler(const char *event_channel, cJSON *json
 
 	SWITCH_STANDARD_STREAM(stream);
 
-	if (!strcasecmp(action, "kick") ||
-		!strcasecmp(action, "mute") ||
+	if (!strcasecmp(action, "kick")) {
+		exec = switch_mprintf("%s %s %s", conference_name, action, cid);
+	} else if (!strcasecmp(action, "mute") ||
 		!strcasecmp(action, "unmute") ||
 		!strcasecmp(action, "tmute") ||
 		!strcasecmp(action, "vmute") ||
 		!strcasecmp(action, "unvmute") ||
-		!strcasecmp(action, "tvmute")
-		) {
-		exec = switch_mprintf("%s %s %s", conference_name, action, cid);
+		!strcasecmp(action, "tvmute")) {
+		if (argv[0]) {
+		  exec = switch_mprintf("%s %s %s %s", conference_name, action, cid, argv[0]);
+		} else {
+		  exec = switch_mprintf("%s %s %s", conference_name, action, cid);
+		}
 	} else if (!strcasecmp(action, "volume_in") ||
 			   !strcasecmp(action, "volume_out") ||
 			   !strcasecmp(action, "vid-res-id") ||