Adds this CPU speed print support to the web debug panel.

In some versions of WASM-bindgen the re-setting of the hook from the current panicking thread would fail.

This makes it possible to select CBG or DMG mode taking into consideration the CGB flag in the ROM file.

There's also support for the disable operation.

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

Including CGB and DMG.

Created more panic conditions for the KEY0 and KEY1.

The background attributes seem to be failing.

Will allow much better debug.

Allows for more flexibility passing command line arguments.

Still pending processing and conversion to RGB8888.

Still requiring a lot of operational work to allow proper working.

The code now breaks if pedantic is set and a warning is triggered.