Callback is done using a global window function.
Printing is performed to the console output.
This is still a work in progress and the final display of the image should be included in the Web interface.

For the bool to int conversion.

To avoid WASM serialization issues.

The solution makes use of the chrono module to obtain time and the image module to save PNG files.
The Web version is still pending support for printing.

The image data buffer printing is still pending.
Still a lot of TODOs and edge cases to be solved.

Allowing better directory usage.
Created initial printer file.

There's already two drivers implemented: Null and Print (to stdout).

The complete GB, CPU and MMU linking is done.

Also added CH4 public WASM API

The all trigger was missing calls to channel 2 and 4.

This issue was prevent CH4 from working properly.
Also added TODO operations to the master volume.

The implemenation seems correct but is yet to be tested.
The coding of LFSR still needs auditing.

Also fixed small channel 3 issue

The selection mode was being returned with an inverted value.

Also avoid problem with processing extra 15th byte of the title for situations where the CGB flag is present.

Improves performance of APU by an order of maginute at the cost of less accurate emulation.