Patrick

[FEATURE] Add `docvalue_fields` to msearch request

2

### Is your feature request related to a problem? `docvalue_fields` does not exist for `msearch` requests in this version of the SDK which currently makes it impossible for us to...

### What is the bug? Currently PutPipelineRequests cannot be deserialized due to the `id` field not being set. ### How can one reproduce the bug? Create a PutPipelineRequest and add...

### Description Currently deserializing a PutPipelineRequest it not possible due to the `id` field not being set but also being required during deserialization. This PR adds support for the `id`...