For now just use the rules file in lib/ve, but eventually
this will be a preset.
Change-Id: I7fd79d3e1dce37aef066d416cd969e5fff1e962f
Depends-On: I17e0d23ddfedf64985495ab35d113ea08c03b1df
The widget attempts to load the ext.codeEditor.ace.modes module
and if it fails, will fall back to regular TextWidget behaviour.
Bug: T49742
Change-Id: Ie483f6eba25e3732a396c18decc0e1844b806b23