Auth: adds JWT bearer auth via /authenticate.

Works in addition to digest auth

kordophone/Bridge/MBIMAuthToken.h

@@ -0,0 +1,26 @@
+//
+//  MBIMAuthToken.h
+//  MBIMAuthToken
+//
+//  Created by James Magahern on 7/6/21.
+//  Copyright © 2021 James Magahern. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface MBIMAuthToken : NSObject
+@property (nonatomic, readonly) NSString *username;
+@property (nonatomic, readonly) NSString *jwtToken;
+@property (nonatomic, readonly) NSDate   *expirationDate;
+
+- (instancetype)initWithUsername:(NSString *)username NS_DESIGNATED_INITIALIZER;
+- (instancetype)initWithTokenString:(NSString *)tokenString NS_DESIGNATED_INITIALIZER;
+
+- (BOOL)isValid;
+
+- (instancetype)init NS_UNAVAILABLE;
+@end
+
+NS_ASSUME_NONNULL_END