[OAS]Complex objects and arrays as operation parameters in OpenAPI

For complex objects and arrays, serialization in a path, query, cookie, header parameter is only possible using content and not any style options.

• Need to remove complex object handling from style part

• And to add #contentType handling for non-primitive types.

See as example: https://www.speakeasy.com/openapi/requests/parameters/path-parameters#complex-objects-and-arrays-as-path-parameters-in-openapi