[lldb/api] Improve error reporting in SBBreakpoint::AddName (NFCI)
This patch improves the error reporting for SBBreakpoint::AddName by
adding a new method SBBreakpoint::AddNameWithErrorHandling that returns
a SBError instead of a boolean.
This way, if the breakpoint naming failed in the backend, the client
(i.e. Xcode), will be able to report the reason of that failure to the
Differential Revision: https://reviews.llvm.org/D82879
Signed-off-by: Med Ismail Bennani <firstname.lastname@example.org>