Adds VS App Center analytics + crash reporting

Currently tracks install, refresh, and update app events.

Pods/AppCenter/AppCenter-SDK-Apple/iOS/AppCenter.framework/Headers/MSChannelGroupProtocol.h

@@ -0,0 +1,83 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+#ifndef MS_CHANNEL_GROUP_PROTOCOL_H
+#define MS_CHANNEL_GROUP_PROTOCOL_H
+
+#import <Foundation/Foundation.h>
+
+#import "MSChannelProtocol.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@class MSChannelUnitConfiguration;
+
+@protocol MSIngestionProtocol;
+@protocol MSChannelUnitProtocol;
+
+/**
+ * `MSChannelGroupProtocol` represents a kind of channel that contains constituent MSChannelUnit objects. When an operation from the
+ * `MSChannelProtocol` is performed on the group, that operation should be propagated to its constituent MSChannelUnit objects.
+ */
+@protocol MSChannelGroupProtocol <MSChannelProtocol>
+
+/**
+ * Initialize a channel unit with the given configuration.
+ *
+ * @param configuration channel configuration.
+ *
+ * @return The added `MSChannelUnitProtocol`. Use this object to enqueue logs.
+ */
+- (id<MSChannelUnitProtocol>)addChannelUnitWithConfiguration:(MSChannelUnitConfiguration *)configuration;
+
+/**
+ * Initialize a channel unit with the given configuration.
+ *
+ * @param configuration channel configuration.
+ * @param ingestion The alternative ingestion object
+ *
+ * @return The added `MSChannelUnitProtocol`. Use this object to enqueue logs.
+ */
+- (id<MSChannelUnitProtocol>)addChannelUnitWithConfiguration:(MSChannelUnitConfiguration *)configuration
+                                               withIngestion:(nullable id<MSIngestionProtocol>)ingestion;
+
+/**
+ * Change the base URL (schema + authority + port only) used to communicate with the backend.
+ *
+ * @param logUrl base URL to use for backend communication.
+ */
+- (void)setLogUrl:(NSString *)logUrl;
+
+/**
+ * Set the app secret.
+ *
+ * @param appSecret The app secret.
+ */
+- (void)setAppSecret:(NSString *)appSecret;
+
+/**
+ * Set the maximum size of the internal storage. This method must be called before App Center is started.
+ *
+ * @discussion The default maximum database size is 10485760 bytes (10 MiB).
+ *
+ * @param sizeInBytes Maximum size of the internal storage in bytes. This will be rounded up to the nearest multiple of a SQLite page size
+ * (default is 4096 bytes). Values below 24576 bytes (24 KiB) will be ignored.
+ * @param completionHandler Callback that is invoked when the database size has been set. The `BOOL` parameter is `YES` if changing the size
+ * is successful, and `NO` otherwise.
+ */
+- (void)setMaxStorageSize:(long)sizeInBytes completionHandler:(nullable void (^)(BOOL))completionHandler;
+
+/**
+ * Return a channel unit instance for the given groupId.
+ *
+ * @param groupId The group ID for a channel unit.
+ *
+ * @return A channel unit instance or `nil`.
+ */
+- (id<MSChannelUnitProtocol>)channelUnitForGroupId:(NSString *)groupId;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif