seata 初步的本地 jmeter 性能压测

- [ ] I have searched the [issues](https://github.com/seata/seata/issues) of this repository and believe that this is not a duplicate.

### Ⅰ. Issue Description

### Ⅱ. Describe what happened

If there is an exception, please attach the exception trace:

```
Just paste your stack trace here!
```

### Ⅲ. Describe what you expected to happen

### Ⅳ. How to reproduce it (as minimally and precisely as possible)

1. xxx
2. xxx
3. xxx

### Ⅴ. Anything else we need to know?

### Ⅵ. Environment:

- JDK version :
- OS :
- Others:

The issue names an initial local JMeter performance test but provides no implementation files, test entry point, workload, or success criteria. Start by reviewing the attached image and locating any existing performance-test configuration in the repository. Done should include a defined local test and recorded performance results.

Written by the indexing model from the issue text.