LaserActive Video Board Support

I noticed a significant sag in the video board of my LaserActive and like [TristanWW](https://www.thingiverse.com/thing:5478712) I was concerned about the capacitors scratching my discs. I already had the clock cable droop down and cause some damage and didn't want the metal cap containers to do even more.

This support prevents the board from sagging by adding additional support about midway across the span that sits above the clamper holder. It fits onto the existing clamper holder, is pressure fit into place, and requires no adhesive or modifications to any parts.

As for the clock cable, I just used a bit of Kapton tape to keep that in place.