Support for blobs

[bturner1273]

Is your feature request related to a problem? Please describe.
There is no support for Blob, UintXArray, etc. If I want to download a file from a server I seemingly cannot describe the contract in spot

Describe the solution you'd like
I would like support for blobs

Describe alternatives you've considered
I am trying to get away with number[] right now but doubt it will coerce a blob into a number[] correctly client-side

Additional context
This is the error I get when trying to describe a response of type blob:

Error: /Users/X/X/X/X/openapi/Endpoints/X/X.ts#64: expected exactly one declaration for
    Blob