GET Operations Incorrectly Allowing Request Body in OpenAPI Generation

[mdaneri]

Description:
There is an issue with the OpenAPI generation in Pode where GET operations are incorrectly allowing the inclusion of a Request Body. According to the OpenAPI Specification, GET operations should not have a request body, but Pode currently does not enforce this restriction.

Steps to Reproduce:

1. Define a route in Pode with a GET operation that includes a request body.
2. Generate the OpenAPI documentation for the route.
3. Observe that the generated documentation includes a request body for the GET operation.

Expected Behavior:
The OpenAPI generation should not include a request body for GET operations as per the OpenAPI Specification.

Actual Behavior:
The generated OpenAPI documentation includes a request body for GET operations.

Example:

Add-PodeRoute -PassThru -Method Get -Path '/pet' -ScriptBlock {
    # code here
} | Set-PodeOARouteInfo -Summary 'Add a new pet to the store' -Description 'Add a new pet to the store' -Tags 'pet' -OperationId 'addPet' -PassThru |
    Set-PodeOARequest -RequestBody (New-PodeOARequestBody -Description 'Create a new pet in the store' -Required -Content (
        New-PodeOAContentMediaType -MediaType 'application/json', 'application/xml' -Content 'Pet'
    )) -PassThru |
    Add-PodeOAResponse -StatusCode 200 -Description 'Successful operation' -Content (New-PodeOAContentMediaType -MediaType 'application/json', 'application/xml' -Content 'Pet') -PassThru |
    Add-PodeOAResponse -StatusCode 405 -Description 'Invalid input'

Additional Context:
The OpenAPI Specification (OAS3) clearly states that a request body is not supported in GET operations. This needs to be enforced in the OpenAPI generation within Pode to ensure compliance with the specification.

References:

• OpenAPI Specification - GET Operation (Refer to the GET operation section which states that a request body is not supported.)