Change bit arrangement and numbering to Big Endian

[VegaASM]

Can all Bit Fields be changed so it is in Big Endian since Broadway is native Big Endian?

[SeekyCt]

Imo counting from the right is more convenient for masking since you can just do (1 << x) rather than (1 << (31 - x)), though I think just having the hex flags directly would be nicer than any kind of bit numbers