Feature: Support parameters are described in path section of an OpenApi v3 specification

[mbraint]

Is your feature request related to a problem? Please describe.
First of all it relates to the OpenApiSpecification v3.
describing parameters
Currently middleware works with parameters are described only in the operation sections
When parameters are described in operation section it works properly:

...
paths:
  /pets/{id}:
    get:
      summary: Get All Pets
      tags:
        - pets
      operationId: getAllPets
      parameters:
        - in: path
          name: id
          required: true
          schema:
            type: string
      responses:
...

When parameters are described in path section it doesn't work

...
paths:
  /pets/{id}:
    parameters:
      - in: path
        name: id
        required: true
        schema
            type: string
    get:
      summary: Get All Pets
      tags:
        - pets
      operationId: getAllPets
      responses:
...

Describe the solution you'd like
Just support working with valid OpenApi v3 according specification