Add equivalents for the command line commands to Launcher
A number of new OpenMW users have indicated that they find the current way of running "start testing commands":https://wiki.openmw.org/index.php?title=Testing#Starting_the_Game_with_Special_Arguments to be cumbersome to use:
it mentions terminal/command line crap which 99% of your users aren't going to use
having to dig into my documents folder whenever i have to edit something is really annoying
Therefore, I'd like to suggest adding equivalent functionality for the startup commands to the Launcher. I have attached a mockup of what this might look like.
Like with the newly implemented "Advanced" menu (a.k.a. the MCP-like menu), this would just be a front for the settings files, and would not prevent power users from manually editing the files themselves. By providing a more user-friendly alternative, this lowers the barrier to entry for OpenMW.
(RM-4345 from redmine: created on 2018-03-06 by Will Herrmann, , closed on 2018-06-09 by Will Herrmann, duplicates #3927 (closed))