Auth: adds JWT bearer auth via /authenticate.

Works in addition to digest auth

kordophone/Bridge/Operations/MBIMBridgeOperation.m

@@ -55,6 +55,11 @@
     return [[self _operationClassMapping] objectForKey:endpointName];
 }
 
++ (BOOL)requiresAuthentication
+{
+    return YES;
+}
+
 - (instancetype)initWithRequestURL:(NSURL *)requestURL completion:(MBIMBridgeOperationCompletionBlock)completionBlock
 {
     self = [super init];