Add "level greater than or equal to" and "level less than" conditions

[Enriath]

I realised as I was setting up some quick-access bars for some jobs that I there wasn't a way to check the player's level. I have a few bars that I use for quickly using specific actions on specific party members, and I don't want them appearing if I don't have that ability.

So I made a quick pair of conditions. The names are a little non-standard, but I think they look quite nice in use.

The two were chosen to cover nearly every use case I could think of, as there wasn't really anything proper I could think of that would want an equal (and that can still be done by combining the two conditions if absolutely necessary).

I'm still quite new to Dalamud, ImGui, and C# overall, so I hope everything is right.