SeataATShardingTransactionManager config with nacos

[sincebyte]

Feature Request

I'm wonder how to config SeataATShardingTransactionManager with nacos in springcloud project.
This was what I want,but the while will never out. I have no idea about this.

    public SeataATShardingTransactionManager() {
        log.info("==== [SeataATShardingTransactionManager.init]: {}");
        while (SpringBeanContext.getContext() == null) {
            try {Thread.sleep(1000L);}
            catch (InterruptedException e) {e.printStackTrace();}
            log.info("==== [SeataATShardingTransactionManager.wait..]: {}");
        }
        NacosConfig nacosConfig = SpringBeanContext.getContext().getBean(NacosConfig.class);
        enableSeataAT           = true;
        applicationId           = nacosConfig.getApplicationName();
        transactionServiceGroup = nacosConfig.getTxServiceGroup();

Describe the feature you would like.

I just want make nacos configuration to be an replacement of seata.conf.