Is it possible to have 5V power and VTREF in SWD programmer for ARM?
Programmers by defaults do not supply power. It only uses some target power.
This way the programmer can be used for all logic levels, eg: 1.8V, 3.3 and 5V.

However, Segger does have 5V-Supply pin.


  Pins 11 and 13 of the connector can be used to supply power to the target hardware.
  Supply voltage is 5V, max. current is 300mA. The output current is monitored and protected
  against overload and short-circuit. Power can be controlled via the J-Link commander.


But you'll have to turn it on by software. 

If 5V is too much, you can get an power supply adapter. (little board with linear regulator)

If you want power on some other pin, you'll have to change the pin-out of the programming header using a converter board.