look for already compiled .mpy modules

[pepijndevos]

This allows you to pass a script that imports a binary .mpy module and combine it as-is without compilation.

I imagine this could also be useful to save some compile time if you want to upload some larger dependency, but my main use for this is to build binary extensions. Like so https://docs.micropython.org/en/latest/develop/natmod.html

[dlech]

Thanks for the pull request. I made a few comments with suggested changes and we should also add a changelog entry for this.

[pepijndevos]

Ok I've update the code to not search the system path and added an abi version check.

[dlech]

Thanks for the changes. If it is still working after all of these changes, I think it is ready to merge.

[pepijndevos]

Tests pass and I can still upload code with it :)