[OAS 3.1.0] New Parameter style values valid for object type

[Azquelt]

The Parameter.style field specifies the way a parameter is passed. The spaceDelimited and pipeDelimited values are now valid when Parameter.type is object.

We may want to:

• Update relevant documentation if we have any
• Add a test which builds a model with these values to ensure they're permitted

[Azquelt]

I don't see any documentation restricting the value of style, so we just need the new test for this issue.

[benjamin-confino]

Please assign this to me