Wall switch connections for a ceiling fan and light
This, thankfully, is simple.  The black wire in that outgoing cable to the fan connects to the fan and the red wire connects to the light -- so you simply have to pigtail the black and red wires together with a wirenut and a short length of wire, and connect the pigtail to the switch terminal.  That will give you simultaneous control over the light and fan from that switch, while leaving your options open to install a double switch or fan controller later.