Autogenerate from found .fpp files

[nelson-lojo]

Searching for generateable files should use the extension .fpp rather than .py

[SybelBlue]

Recommendation: to allow syntax highlighting to still function on the files, why don't we use a scheme like '.fpp.py' and '.fpp.rb'?

[nelson-lojo]

to allow syntax highlighting [...] '.fpp.py' and '.fpp.rb'

This seems convenient. I'll include it, but since we don't know what the final extension will be, we must accept any extension