added SiTCP10G to gitignore

Author: hansk68

.gitignore

@@ -72,3 +72,4 @@ examples/tdc_bdaq/firmware/vivado/*
 !examples/tdc_bdaq/firmware/vivado/run.tcl
 examples/tdc_bdaq/firmware/src/SiTCP/*
 examples/bdaq_core/firmware/vivado/dfx_runtime.txt
+examples/bdaq_core/firmware/SiTCP10G/*