pass linestyle to embeded block

[doonfrs]

I needed to embed icons in the editor, and I needed the icon to take the same line font size, I found that I had no access to the line style from the embedded builder.
This will be helpful for inline embedded blocks.

Example code: I can access the font size now ( and other styles for sure)

[bambinoua]

@doonfrs man did you overview the code of the package? Your change is broken! You updated the prototype of EmbedBuild.build (add new parameter textStyle) but this affects all widges which depends on it namely ImageEmbedBuilder, ImageEmbedBuilderWeb, ImageVideoBuilder and now the project which use them is not compiled!