Add support for vial macros

[nobodywasishere]

I have a fork of this repo with a custom macropad implemented here. Attempting to save a macro with vial gives an error "failed to communicate with the device" - don't know if this is an issue with Vial or how this project implements support. Any help would be appreciated.

[nobodywasishere]

Weirdly enough, refreshing the board after this makes one of the keys have Meh assigned to it

[sago35]

@nobodywasishere
Thanks for trying tinygo-keyboard.

tinygo-keyboard does not support macro at this time.

I have never used Vial's macro feature before.
However, it looks like an interesting feature and I will try to implement it.
https://get.vial.today/manual/macros.html

[nobodywasishere]

Thank you for creating this project! It made my macropad project get off the ground a lot faster, and I've really liked working with TinyGO. If there's anything I can do to help with macro support, let me know! I'm assuming you're reverse engineering the default Vial firmware to figure out what it's doing, then re-implementing it yourself, right?

[sago35]

@nobodywasishere
I tried implementing Vial macros in #40
Please give it a try.

[nobodywasishere]

That works great! Thank you so much!

[sago35]

merged.