Online Editor about slint

[ogoffart]

Work in progress in https://sixtyfps.io/editor
(This is currently a single .hml file using the monaco editor)

What remains to be done is

• Better styling so it looks somehow prettier
• Error message with line number, and show it inline in the source (#74)
• Button to compile instead of doing it on every keystroke. We could keep a checkbox to enable the mode where we recompile on every keystroke (#76)
• Combobox to switch to some default examples. Also ability to set the source code from the URL. (#75)
• image support. (The compiler should be able to load image from an URL with wasm somehow) (#82)

Optional:

• get the monaco editor from npm and have a build system like most web app do.

The source code is currently in the www repo:
https://github.com/sixtyfpsui/www/blob/master/editor/index.html but it should be maybe moved to this repository somwehere.

[ogoffart]

The code editor is now in the repository. Closing this issue and track with sub issues