Error now correctly checks whether the borrow that does not live
long enough is being returned before annotating the error with the
arguments and return type from the signature - as this would not be
relevant if the borrow was not being returned.
Enhances annotation logic to properly consider named lifetimes where
lifetime elision rules that were previously implemented would not apply.
Further, adds new help and note messages to diagnostics and highlights
only lifetime when dealing with named lifetimes.
This error can only occur within a function when a borrow of data owned
within the function is returned; and when there are arguments that could
have been returned instead. Therefore, it is always applicable to add a
specific note that links to the relevant rust documentation about
dangling references.
