TODO: rework `Graves::getPermissionList`

[svaningelgem]

Right now it's looping every time every single permission.

Maybe a better way is to load it once, cache it and only refresh the cache when the permissions are modified.

[gwamaka1]

Hey! i am a student at CodePath in their AI301 course and want to work on fixing this. I will look into the time complexity and would like to work on the issue.

[svaningelgem]

Thanks! If you need any assistance, just ping me.