OpenAPI 3.1.0 support: Encoding Object now supports style, explode and allowReserved for the multipart/form-data #2964

In OpenAPI 3.1.0, the Encoding Object now supports style, explode and allowReserved for the multipart/form-data media type as well.

OpenAPI 3.0.x

OpenAPI 3.1.0

The goal of this issue is to figure out what are the implications for swagger-js and swagger-ui and implement the support for above mentioned changes.