Allows the transfer of data according to the specs in dma.rs.

This is only a structure change and no real DMA implementation has been done.

The performance should be poor as there're lots of if clauses.

This is a temporary hack until a real speed switch is available.

The double speed mode is still not available.

The code is still pending extensive test and some errors may exist.

Will allow much better debug.

Allows for more flexibility passing command line arguments.

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

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.

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.

Allowing better directory usage.
Created initial printer file.

The complete GB, CPU and MMU linking is done.

Also added CH4 public WASM API

Also fixed small channel 3 issue

Support for set of video, audio and timer.
Now with support for toggling audio in the SDL version.