The cheat page is up and we will update it every time new ones become available and when we receive the textual words that makes sense.
This is a complete list of cheats for the PC version. I have not checked if all of these work or still do the same things. As before, there are many different key combos that match each cheat, so I'm listing the shortest possible ones. It could take some time to find the intended textual words.
Links: GTA Forums topic, edisoncarter's cheat page, PC Cheat page