Previously, anyone could remove any local alias, meaning that someone could re-route a popular alias elsewhere
Now, only the creator of the alias, users who can set canonical aliases for the room, server admins and the server user can delete aliases
added some additional changes/fixes to adapt to our codebase
Co-authored-by: strawberry <strawberry@puppygock.gay>
Signed-off-by: strawberry <strawberry@puppygock.gay>
