Use Case

When generating Go code, I'd like to customize the Go field name for a parameter independently of its OpenAPI name.

Current Behavior

The x-ogen-name extension works for schema types and x-ogen-properties works for struct fields within schemas, but there's no equivalent for operation parameters.

parameters:
  - name: pickuptype
    in: path
    schema:
      type: string

Generates:

type MyOperationParams struct {
    Pickuptype string
}

Desired Behavior

Support x-ogen-name (or a new x-ogen-param-name) on parameters:

parameters:
  - name: pickuptype
    in: path
    x-ogen-name: CancelBy
    schema:
      type: string

Would generate:

type MyOperationParams struct {
    CancelBy string
}

Motivation

This allows preserving semantic meaning in generated Go code when the OpenAPI parameter name doesn't match the desired Go identifier, similar to how x-ogen-properties allows renaming struct fields.