Renamed AppCheck to AppCheckCore (#11581)

Renamed the App Check (Lite) SDK to App Check Core.

AppCheckCore/Sources/DebugProvider/API/GACAppCheckDebugProviderAPIService.h

@@ -0,0 +1,45 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+@class FBLPromise<Result>;
+@class GACAppCheckToken;
+@protocol GACAppCheckAPIServiceProtocol;
+
+NS_ASSUME_NONNULL_BEGIN
+
+@protocol GACAppCheckDebugProviderAPIServiceProtocol <NSObject>
+
+- (FBLPromise<GACAppCheckToken *> *)appCheckTokenWithDebugToken:(NSString *)debugToken;
+
+@end
+
+@interface GACAppCheckDebugProviderAPIService
+    : NSObject <GACAppCheckDebugProviderAPIServiceProtocol>
+
+/// Default initializer.
+/// @param APIService An instance implementing `GACAppCheckAPIServiceProtocol` to be used to send
+/// network requests to the App Check backend.
+/// @param resourceName The name of the resource protected by App Check; for a Firebase App this is
+/// "projects/{project_id}/apps/{app_id}". See https://google.aip.dev/122 for more details about
+/// resource names.
+- (instancetype)initWithAPIService:(id<GACAppCheckAPIServiceProtocol>)APIService
+                      resourceName:(NSString *)resourceName;
+
+@end
+
+NS_ASSUME_NONNULL_END