rename webapi command --version to --apiver to avoid conflict

[justinkb]

trafficstars

currently it is impossible to use webapi call on anything but version 1 apis, since the argument parser always interprets a --version parameter wherever you pass it in the command line as a request to print the version number of steamctl

[nutterthanos]

@justinkb dev has gone missing for a while don't know if they will come back

[nutterthanos]

@justinkb if you really needed it changed you can fork it or something and build it yourself with the fix