Add labels for debugging

[itsMapleLeaf]

Having the full class string on elements is usually fine, but since we're in compile land, some debugging labels would be really helpful. A few ways to accomplish this, in order of preference

• A data attribute data-tw-component="FileName"
  Easiest way to go, keeps the class name logic as is with a completely additive attribute

• Appending to the className tw-FileName bg-blue-500 text-white
  Also completely doable, might introduce some additional clutter on the class name though

• Using labels + apply for everything
  I'm already iffy on using apply for everything, could introduce unnecessary overhead in the cases where apply is already being used. That, and the labels proposal hasn't happened yet, and changes in that will require changes in the transformer. In short, lack of stability here

Additionally, only do this in dev, and not in prod. Maybe make it configurable, but I don't see a need? Someone might have a problem with it at some point, so maybe