Is your feature request related to a problem? Please describe

Similar to the system generate ingest pipeline/processors in #17509. We can create system generated search pipeline. We can have a field similar to semantic or a better keyword here, which will be checked during the search call and if present a search pipeline would be created and attached to the request before executing it.

Few things to discuss

1. How can we gather the pipeline configuration in the search request?
2. How the latency would be affected if we are creating the search pipeline on the hot path of search request?

Use Cases:

1. Hybrid Search and Neural Search can work with the system generated pipelines

Describe the solution you'd like

Similar to the system generate ingest pipeline/processors in #17509. We can create system generated search pipeline

Related component

No response

Describe alternatives you've considered

No response

Additional context

No response