Fix Sync message issue (#9)

src/main/kotlin/JGrasscutterCommand.kt

@@ -189,7 +189,7 @@ object JGrasscutterCommand : KotlinPlugin(
             // 否则如果启用了同步消息，且控制台令牌不为空，且为群消息时
             else if (server.consoleToken.isNotEmpty() && server.syncMessage && this is GroupMessageEvent) {
                 try {
-                    OpenCommandApi.runCommands(
+                    OpenCommandApi.runCommand(
                         server.address,
                         server.consoleToken,
                         "say <color=green>${sender.nameCardOrNick}</color>:\n${this.message.contentToString()}")

src/main/kotlin/opencommand/OpenCommandApi.kt

@@ -138,6 +138,19 @@ object OpenCommandApi {
         doRequest(host, json.encodeToString(VerifyRequest(token, code)))
     }
 
+    /**
+     * 运行命令，成功时返回命令执行结果，失败时抛出异常，异常详情参考doRequest描述
+     * @param host 服务器地址
+     * @param token 持久令牌
+     * @param command 命令行
+     * @return 命令执行结果
+     * @see doRequest
+     */
+    suspend fun runCommand(host: String, token: String, command: String): String {
+        val ret = doRequest(host, json.encodeToString(CommandRequest(token, command)))
+        return if (ret.isNullOrEmpty()) "OK" else ret
+    }
+
     /**
      * 运行命令，成功时返回命令执行结果，失败时抛出异常，异常详情参考doRequest描述
      * 允许单次执行多条命令，用换行(\n)分隔