gapid --help should say that giving a filename will open that trace.

I'm trying to automate some steps for manual testing, but running gapid client is the one step that I still have to use the gui to find the tracefile, device, and package, despite already having this info in the shell session. It would be a great help to be able to specify these when starting the client from the command line, something like `./gapid -opentrace="tracefile.gfxtrace"` or `./gapid -capture-device="" -capture-package=""`