tools: readme addition for shader debugging
tools: readme addition for shader debugging

dlespiau/intel-gpu-tools,rib/intel-gpu-tools,chenxianqin/intel-gpu-tools,mv0/intel-gpu-tools,yipdw/intel-gpu-tools,tiagovignatti/intel-gpu-tools,dlespiau/checkmate-test-igt,erikarn/intel-gpu-tools,rib/intel-gpu-tools,erikarn/intel-gpu-tools,rib/intel-gpu-tools,mv0/intel-gpu-tools,rib/intel-gpu-tools,ChrisCummins/intel-gpu-tools,chenxianqin/intel-gpu-tools,dlespiau/checkmate-test-igt,mv0/intel-gpu-tools,dlespiau/checkmate-test-igt,ChrisCummins/intel-gpu-tools,tiagovignatti/intel-gpu-tools,mv0/intel-gpu-tools,erikarn/intel-gpu-tools,chenxianqin/intel-gpu-tools,dlespiau/intel-gpu-tools,tiagovignatti/intel-gpu-tools,yipdw/intel-gpu-tools,dlespiau/intel-gpu-tools,yipdw/intel-gpu-tools,erikarn/intel-gpu-tools,yipdw/intel-gpu-tools,chenxianqin/intel-gpu-tools,tiagovignatti/intel-gpu-tools,ChrisCummins/intel-gpu-tools,dlespiau/checkmate-test-igt,ChrisCummins/intel-gpu-tools