[pixel-editor]: add path reset button

[andrejsharapov]

Describe your suggested feature

1. I think it's worth adding a button to reset the entire path. It will be more convenient than erasing one cell at a time.

2. For handleMouseMove, there is only the addition of points, but there is no way to erase them.

[mririgoyen]

This is actually just a very, early prototype. @Templarian is working on the full-fledged editor. Perhaps he can give a status update when he has time. 😄

[Templarian]

@andrejsharapov This is being developed into a full fledged editor. I put a proof of concept up below.

https://pictogrammers.github.io/@pictogrammers/pixel-editor/

• The demo above resize canvas is broken (fixed it locally already).
• The demo above the open button is broken due to the api moving to another domain.
• Have a lot more changes locally that I'll work to push out this weekend. Rewriting the UI right now from scratch.

[Templarian]

@andrejsharapov Pushed more changes. I'll keep this thread open until I have all the features flushed out with the ability to create contributions from the UI. Then we'll replace that page with a link to the application.

[Templarian]

Closing this one as I'll handle everything over in the https://github.com/Pictogrammers/Pixel-Editor repo now.