More read and write operations and more state buffer manipulation migration.

By setting proper sound raw values.

Also added all major APU constant addresses.
Disabled serial transfer on state loading.

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.

More standard support for the `BusComponent` interface.

There are many quirks to how this works but the unfreeze and thre length clock on enable are the most important ones.
For more information on these options check https://github.com/retrio/gb-test-roms/blob/master/dmg_sound/source/03-trigger.s.

We're currently in the 02-len ctr.s test.

Running under a single call.
This required increasing variable size from u8 to u16.

There's also support for the disable operation.

With initial approach for scalling down the speed of other components.