idea: a new user setting to specify default mods to be used for /np and/or !r

[omkelderman]

From discord user Phell#5384:

hi ! I'd be great if you could store a mod when you dm the bot instead of having to /np then !with mods

instead you (example) !set or !unset HDHR and then everytime you /np it gives you the pp with hdhr or maybe it gives you both nomod & hdhr
could also work for recommendations

This does depend on #192 as otherwise there would be no way to view nomod when a default mod is used