Please use NS_ERROR_ENUM macro for describing errors

[Cy-4AH]

microsoft-authentication-library-for-objc/MSAL/src/public/MSALError.h

Line 131 in 856eea5

typedef NS_ENUM(NSInteger, MSALError)

Wrong macro complicates error handling in swift:
for example can't use statement:
catch MSALError.interactionRequired
it's leads to error message: Cast from 'Error' to unrelated type 'MSALError' always fails

[mipetriu]

@Cy-4AH Thanks for your suggestion, we have to determine if making this change will cause any problems. We will update this with more details later.