Add raw device-specific output to releases

[echo-lalia]

In MicroHydra 1.x, people who wanted to tinker with the source code could easily download the contents of the repo and put it on their device.

Now, the parse_files script needs to be run to output device-specific code. The build action does this and compiles it into .mpy files to add to the releases (in a .zip file). However, there's no easy option if you still want the raw ".py" files.

So, to solve this, Id like to add an additional step to the build process to zip the plain device-specific code, and then add that to the release alongside the compiled code.