Enable use GuiLab Xaml Parser

[workgroupengineering]

In PR kekekeks/XamlX#91 allows you to use GuiLab Xml Parser in XamlC , which has a fault tolerance.
I would like to propose that you also enable support for Avalonia.

[kekekeks]

Note that said parser is supposed to be used for IDE plugins, it doesn't pass all the checks required for proper whitespace handling

[workgroupengineering]

it doesn't pass all the checks required for proper whitespace handling

I am aware of it. I partially solved it, as soon as it's ready I'll make a PR on the main GuiLabs Parser repository