Add synchronous transport

Hi @znerol when the code and MR is available let me know.

Idea sounds about right

Done. Honestly, I just copied the sm_test_transport module.

Note that there is no clear naming pattern in existing transports. The name of the doctrine transport module is sm_transport_doctrine. Maybe something to think about before merging.

Review added.

Note that there is no clear naming pattern in existing transports.

FYI the default doctrine transport is doctrine. I wouldn't be concerned about the test module transport naming schemes. As suggested in MR review, we'll keep it simple, we just need to figure the right term. Preferably not 'sync'.

@znerol let me know if you have any opinions on the changes.

Thanks a lot @dpi

Automatically closed - issue fixed for 2 weeks with no activity.