Add PromiseKit dependency

- Added PromiseKit dependency

Carthage/Checkouts/PromiseKit/Tests/Bridging/Infrastructure.h

@@ -0,0 +1,14 @@
+@import Foundation;
+@class AnyPromise;
+
+AnyPromise *PMKDummyAnyPromise_YES(void);
+AnyPromise *PMKDummyAnyPromise_Manifold(void);
+AnyPromise *PMKDummyAnyPromise_Error(void);
+
+__attribute__((objc_runtime_name("PMKPromiseBridgeHelper")))
+__attribute__((objc_subclassing_restricted))
+@interface PromiseBridgeHelper: NSObject
+- (AnyPromise *)bridge1;
+@end
+
+AnyPromise *testCase626(void);