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.

Including CGB and DMG.

Created more panic conditions for the KEY0 and KEY1.

Done that by making use of the new emukit features.