MIRTH-2896: Added new "Binary MIME Types" property to both the HTTP Listener (for inbound requests) and the HTTP Sender (for responses). By default it will automatically Base64-encode the same MIME types as before (application, image, video, audio), but now users can configure exactly what should or shouldn't be encoded. There is also a regular expression check box so that users can specify "encode everything in application/ _except_ for application/json", or similar use-cases.