addded permissions get/set before realizing it already comes as part of
the User object. Split User attributes that will be templated into
UserTemplate struct, which User inherits. ApplyTemplateToUser takes a
UserTemplate, while ModifyUser takes a plain map with some typed fields
(display name and email, for now).
Currently uses an API key (Seems simpler for the user than importing the
jfa-go user and granting perms). Strategy as follows:
* MustGetUser(jfID) function checks the cache for user, if not, calls
Jellyseerr's importer passing jfID. From either, the user object is
returned, which (in later commits) can be used to update the user's
email (and potentially other info).
My API key is in there rn but its for a local testing instance, who
cares.
