By Joanna Plucinska and Gerhard Mey MEDYKA/BORATYN, Poland (Reuters) – Five weeks after the start of the fighting in Ukraine, Kamil Prusinowski and his small band of volunteers are exhausted at their refugee shelter over the border in Poland. Supplies, funding and energy are all running low, Prusinowski said in a room filled with children’s toys, stuffed animals and footballs in the centre housed in a former school in the village of Boratyn. “We are just bleeding out,” the 37-year-old added. “We just require the proper institutional help to support all of these people.” More than 4 million Ukr…