Skip type: string + format: binary in object properties

[czechboy0]

Until we support multipart (#36), we need to skip type: string, format: binary properties, as they get generated inside Codable structs and fail to compile.

Might require the isSchemaSupported family of functions to gain some "context" enum that tells the function where the schema is being used, and while we need to allow this schema as a root schema of application/octet-stream (and other binary) content types, we should disallow it (by skipping it) as object properties.

Once we support multipart, we'll likely generate non-Codable structs to hold the schemas used by multipart, but that's TBD and out of scope of this issue.