Add more documentation and corrections for gma.lua, gma.canbus, gma.network, gma.show and gma.show.getobj

[gutasiadam]

Added documentation and corrections for gma.lua, gma.canbus, gma.network, gma.show and gma.show.getobj.

[Hobadee]

Thanks for this!

I did notice some grammar and spelling errors, so those will need to be cleaned up. (It sounds like English might not be your first language so no worries, I can do this a bit later when I'm not on my phone.)

Also, I don't have access to a physical MA anymore to test with. Everything looks like it makes sense, but can you please confirm how you got this info? (Experimentation is fine, I just want it on the public record.)

[gutasiadam]

Thank you for your feedback! I could soon fix the spelling errors as well. I am unsure whether a new merge request is required for another commit.

The information I added to the documentation is based solely on experiments. Currently, I only have access to a command wing with onPc. Based on the concept of how the onPc version emulates real MA, I believe these commands should work just fine.

[Hobadee]

I reviewed grammar, spelling, and formatting. Good to merge.