Move FIRAppCheckBackoffWrapperFake to a separate folder (#8805)

* Move FIRAppCheckBackoffWrapperFake to a separate folder

* Add AppCheckBackoffWrapperFake to App Check podspec

Author: maksymmalyhin

FirebaseAppCheck.podspec

@@ -61,6 +61,7 @@ Pod::Spec.new do |s|
       base_dir + 'Tests/Unit/**/*.[mh]',
       base_dir + 'Tests/Utils/**/*.[mh]',
       'SharedTestUtilities/AppCheckFake/*',
+      'SharedTestUtilities/AppCheckBackoffWrapperFake/*',
       'SharedTestUtilities/Date/*',
       'SharedTestUtilities/URLSession/*',
     ]

FirebaseAppCheck/Tests/Unit/AppAttestProvider/FIRAppAttestProviderTests.m

@@ -35,7 +35,7 @@
 
 #import "FirebaseCore/Sources/Private/FirebaseCoreInternal.h"
 
-#import "SharedTestUtilities/AppCheckFake/FIRAppCheckBackoffWrapperFake.h"
+#import "SharedTestUtilities/AppCheckBackoffWrapperFake/FIRAppCheckBackoffWrapperFake.h"
 
 #if FIR_APP_ATTEST_SUPPORTED_TARGETS
 

FirebaseAppCheck/Tests/Unit/DeviceCheckProvider/FIRDeviceCheckProviderTests.m

@@ -26,7 +26,7 @@
 
 #import "FirebaseCore/Sources/Private/FirebaseCoreInternal.h"
 
-#import "SharedTestUtilities/AppCheckFake/FIRAppCheckBackoffWrapperFake.h"
+#import "SharedTestUtilities/AppCheckBackoffWrapperFake/FIRAppCheckBackoffWrapperFake.h"
 
 API_AVAILABLE(ios(11.0), macos(10.15), tvos(11.0))
 API_UNAVAILABLE(watchos)

SharedTestUtilities/AppCheckFake/FIRAppCheckBackoffWrapperFake.h renamed to SharedTestUtilities/AppCheckBackoffWrapperFake/FIRAppCheckBackoffWrapperFake.h

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-#import "SharedTestUtilities/AppCheckFake/FIRAppCheckBackoffWrapperFake.h"
+#import "SharedTestUtilities/AppCheckBackoffWrapperFake/FIRAppCheckBackoffWrapperFake.h"
 
 #if __has_include(<FBLPromises/FBLPromises.h>)
 #import <FBLPromises/FBLPromises.h>