The leak doesn't look bad enough to stop the car from being moved a short distance, is the lhm level cap in the reservoir between the 2 orange lines at its normal height setting? If not, pop the car on its highest setting & keep pouring lhm into the reservoir tank until the float cap rises between the 2 lines. The only issue i'd be worrying about is that by putting it on high it may cause the leak to actually get worse as it puts more pressure into the system, so only do that as a last resort if the car wont rise up.
What i suspect may have happened is that the lhm level might be low anyway, when you fired up the car it drew in air into the system, when this happens the steering is stiff & the car doesn't rise up. The easiest method to sorting it out is to pour a couple of litres into the reservoir (if the float is below the lowest line) & then physically turn the steering on the spot on full lock both sides & keep doing this to purge the air out. You can also press the brake pedal as well to create pressure in the system to get the air moving & into the lhm tank. Hopefully the steering will start to feel smoother & the power steering will gradually come back, at that point it should hopefully rise up.
The other method is to look at the main pipe that goes into the lhm pump, trace it back to the reservoir, undo the pipe from the reservoir, pop a funnel into the upended pipe & with the engine running pour in lhm, you should see bubbles appear as the lhm dissappears down the funnel, keep pouring in lhm until the bubbles stop & then very quickly take the funnel out & put the pipe back onto the reservoir & then do the steering wheel thingy above & hopefully job done
