Allow attaching additional files in the POST
Allow attaching additional files in the POST

To allow upload using tools which rely on {runtime.*} variables

Actions server side:
- Compile a "blacklist" (eg : {runtime.platform.path}/variants/{build.variant} )
- Replace these entries with {build.path} when found in commandline
- Map the blacklisted entry to a set of extra files to be uploaded
- Profit

arduino/arduino-create-agent,arduino/arduino-create-agent,arduino/arduino-create-agent,arduino/arduino-create-agent