Config: case warning

[BrettMayson]

• Turns config.cpp of any case into config.bin
• Warns if config.cpp is not all lowercase
• Closes case sensitivity ignored - Config.cpp -> config.cpp #562

[codecov]

Codecov Report

Merging #565 (0ea266b) into main (e02a4d4) will decrease coverage by 0.3%.
The diff coverage is 9.0%.

Files	Coverage Δ
bin/src/modules/rapifier.rs	57.0% <100.0%> (ø)
libs/preprocessor/src/processor/mod.rs	91.2% <40.0%> (-1.6%)	⬇️
.../preprocessor/src/codes/pw2_invalid_config_case.rs	0.0% <0.0%> (ø)