My team used a Raspberry Pi this year (for the same purpose: vision) and we ended up powering the Pi off of the 5V 2A rail of the VRM, through the Raspberry Pi's GPIO. (Pins 2 and 6 in
this diagram, 5V Power and Ground respectively, lend themselves nicely to powering the Pi since you can use a standard 3 pin PWM cable)
You should be able to connect the 5V Power/Ground wires straight to your VRM, unless you're already using the 5V 2A rail of your VRM. In that case you can add a second VRM; which you probably want to wire up to one of the wago ports and not to the VRM weidmuller connector with the fuse (don't want to trip that fuse!)