Hi @kalluu91 ,
The manifest doesn't support any ttf files. I needed that too, and the only workaround I could come up, was to try to declare it as image. So you can use in the manifest (eventually rename your ttf to a png to avoid checks here, or just remove the extension)
<resources>
<img path="your_path_to_ttf.png" />
</resources>
and in the end try to load it using context.resources.getResource(..)
In some cases, there could work if you have the icons declared inside the css, using the icon url with a relative path ( like src: url(./your_ttf) ) . That would save you the loading the resource by yourself. But it works only sometimes, it depends what kind of app you are using.
But all these are kind of unsupported. Would be great if you can find another way to get the icons.
Hope this helps!