feat: support jsonl uploads (#158)

Author: stainless-app[bot]

lib/orb/util.rb

@@ -559,6 +559,8 @@ def encode_content(headers, body)
         case [content_type, body]
         in [%r{^application/(?:vnd\.api\+)?json}, Hash | Array]
           [headers, JSON.fast_generate(body)]
+        in [%r{^application/(?:x-)?jsonl}, Enumerable]
+          [headers, body.lazy.map { JSON.fast_generate(_1) }]
         in [%r{^multipart/form-data}, Hash | IO | StringIO]
           boundary, strio = encode_multipart_streaming(body)
           headers = {**headers, "content-type" => "#{content_type}; boundary=#{boundary}"}
@@ -589,14 +591,14 @@ def decode_content(headers, stream:, suppress_error: false)
             raise e unless suppress_error
             json
           end
-        in %r{^text/event-stream}
-          lines = decode_lines(stream)
-          decode_sse(lines)
         in %r{^application/(?:x-)?jsonl}
           lines = decode_lines(stream)
           chain_fused(lines) do |y|
             lines.each { y << JSON.parse(_1, symbolize_names: true) }
           end
+        in %r{^text/event-stream}
+          lines = decode_lines(stream)
+          decode_sse(lines)
         in %r{^text/}
           stream.to_a.join
         else