QB64PE Chat Server

[TerryRitchie]

I never realized until studying this code that CLS can use an image.handle.  That's neat. 

Chat works fine the few times I've connected. 

- Dav

That was added a few versions ago after a suggestion I made to add it. Very handy to not have to _DEST to an image just to clear it and then _DEST back out to the previous destination.