Allows modularity and extendability in Zippy.

It was not handling the re-creation of GB instance correctly.

Also simplified error to string conversion.

It's used because of static size nature of it.

Created automatic inference of format from magic number.
Extracts BOS data from BOSC files to be used in web.

Made read MMU a non mutable operation.
Added support for CPU description.
Added Display support for CPU.
Extracted type definition for `Instruction`.
Support for diag_gb!() - uses global unsafe approach, which is not problematic for the purpose.
Inline fetch() operation in cpu clock.
Moved pedantic validation up in the CPU.
Fix simple diag issue.
Changed naming of read and write unsafe ops to raw.
New pedantic asserts.
Fix an issue with HDMA destination address prevent CHIP-8 ROM from
working.

Created the `vebose` mode for diagnostics.

CGB is now going to boot using Boytacean ROM by default.
Allows better image and open source only boot.