Change crosshair cursor to laser pointer
osx-presentation is almost perfect for me, the only thing I felt like I wanted was a laser pointer instead of the crosshairs which I felt wasn't very visible to those over Zoom and looked awkward at large sizes. So I made this change and I thought I'd send in a patch in case you felt like it might be a change other users might like as well. Attached is both the simple patch using the base64 encoded png along with the inkscape svg I created for the laser pointer dot. I tried to mimic the powerpoint laser point dot. The patch applies cleanly to the current release version of presentation.py. Sorry for opening an issue for this patch, I couldn't figure out how to open a merge request and the email this gitlab instance gave me to send an email to got rejected.