Additional light

I have a single light in my garage which is insufficient for the dart board that i have just put up. The existing light is about 8ft from the board and gives insufficient light to the board. What i would like is a 3 light track about 3ft from the board. Can i put a +/- 5ft piece of wiring off the existing light, have an on/off switch half way in it so the track light can be run separate from the existing light ?. I would source an electrician to do this work for sure, just wondering if it is feasible

Should be very easy to do.
Assuming you have a power source Permanent Live/Neutral and earth at the original light fitting - you just run 1mm² twin and earth from here to the new light fitting PL/N/E.
Then look up wiki to see how to connect the new light source to the switch.
Providing there is easy access and no other significant complications a competent electrician would take at most an hour to complete this work.