iOS 14 compatibility fix.

[jjksam]

Only minimum modifications on the code. Please don't merge those none *.m & *.h files modification.
Add a accuracyAuthorization and a method similar to CLLocationManager provided.

@Property (nonatomic, assign) INTUAccuracyAuthorization accuracyAuthorization;

• (void)requestTemporaryFullAccuracyAuthorizationWithPurposeKey:(nonnull NSString *)purposeKey completion:(void (^ _Nullable)(NSError * _Nullable))completion;