Various small cleanups, fixes, improvements

[Ocawesome101]

Fixed:

• Some grammatical errors
• Fuchas will now boot without requiring a signal to be fired; I'd like to track down the root cause of this and squash it; for now, I just push a signal on boot

Cleaned up / improved:

• Redid io.input() / io.output()
• Removed call to load() in init.lua, replaced with direct loadfile definition (if there's a good reason for having it like it was, I'll change it back)
• Removed all wrapping of string API functions, as they weren't used anyway
• Removed unsupported "improvement/extension" functions
• Added OSDATA.CONFIG option, and bootargs --[no-]auto-setarch for Fushell to automatically set computer arch to Lua 5.3 if supported, and the requisite support into Fushell

Misc:

• Swapped file/directory colors in the dir command

[zenith391]

Thanks you for that PR, i'll try to dig deeper into that problem with signals. However i don't have it so it'll be hard.

[Ocawesome101]

Ok. Are you using OCEmu? I'd try it in-game if you haven't.