Add XCode 11.4 recommended project settings

[arangato]

XCode complains in issue navigator about MSAL project an suggests updating it to recommended settings.
Those recomended settings seem to add the following build configuration:

ENABLE_HARDENED_RUNTIME = YES;

and compiler flags:
CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES; CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES; CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;

[jasoncoolmax]

Close it as a duplicate to another issue AzureAD/microsoft-authentication-library-for-objc#961.