Add support for Aleph Streams in decoding

[ikitommi]

Would be great if Muuntaja would work with Aleph (http client) streams automatically, e.g. with using muuntaja.core/decode-request-body:

can’t use decode-response-body directly:
No implementation of method: :into-input-stream of protocol: #'muuntaja.protocols/IntoInputStream found for class: manifold.stream.BufferedStream