Replace references of CCSDS_CommandPacket_t to CFE_SB_CmdHdr_t. This prevents the skeleton_app to compile in the latest cFS. See issue [Remove references to "CCSDS" structures outside of CFE SB. ](https://github.com/nasa/cFE/issues/719)
Replace references of CCSDS_CommandPacket_t to CFE_SB_CmdHdr_t.
This prevents the skeleton_app to compile in the latest cFS.
See issue Remove references to "CCSDS" structures outside of CFE SB.