[feature] Add a Batch analysis feature

[anyuzoey]

• research potential ways. pros and cons.
• test on locally, like prompt "/aiops-plugin:root-cause-analysis job_a, job_b, job_c"
• connect log fetcher, with rca skill. like looping in a frequency, run parallel, aggregate results.
• try run it headless way.
• try agent sdk approach.
• compare cost, performance over difference approaches.