[Feat] Add option to choose between leader and localleader key mappings #150
Description
Since papis.nvim is a file type dependent plugin, it might make sense to add an option to have local leader key mappings. I know not everyone uses the local leader, so having the normal leader as the default definitely makes sense. But since that is kind of what the local leader was made for, the option would be nice.
I've sketched up a fork and created a draft PR, although I haven't worked with Lua a whole lot so any criticism would be welcome. I hope I didn't miss any key mappings at least.