Run CLANGFORMAT on FlipperKit folder

Summary:
This diff runs CLANGFORMAT lint on FlipperKit. I have added CLANGFORMAT as the lint engined for objc files in xplat/sonar. Right now the iOS folder is not formatted according to CLANGFORMAT.
Ran `arc lint -a --paths-cmd "find ./iOS/FlipperKit -type f" --verbose`

Reviewed By: passy

Differential Revision: D19942170

fbshipit-source-id: af677323af4edb761f61f8f7e289cab743aa31f2

iOS/FlipperKit/FlipperClient.h

@@ -12,30 +12,32 @@
 #import "FlipperStateUpdateListener.h"
 
 /**
-Represents a connection between the Sonar desktop och client side. Manages the lifecycle of attached
-plugin instances.
+Represents a connection between the Sonar desktop och client side. Manages the
+lifecycle of attached plugin instances.
 */
 @interface FlipperClient : NSObject
 
 /**
-The shared singleton FlipperClient instance. It is an error to call this on non-debug builds to avoid leaking data.
+The shared singleton FlipperClient instance. It is an error to call this on
+non-debug builds to avoid leaking data.
 */
 + (instancetype)sharedClient;
 
 /**
 Register a plugin with the client.
 */
-- (void)addPlugin:(NSObject<FlipperPlugin> *)plugin;
+- (void)addPlugin:(NSObject<FlipperPlugin>*)plugin;
 
 /**
 Unregister a plugin with the client.
 */
-- (void)removePlugin:(NSObject<FlipperPlugin> *)plugin;
+- (void)removePlugin:(NSObject<FlipperPlugin>*)plugin;
 
 /**
-Retrieve the plugin with a given identifier which was previously registered with this client.
+Retrieve the plugin with a given identifier which was previously registered with
+this client.
 */
-- (NSObject<FlipperPlugin> *)pluginWithIdentifier:(NSString *)identifier;
+- (NSObject<FlipperPlugin>*)pluginWithIdentifier:(NSString*)identifier;
 
 /**
 Establish a connection to the Sonar desktop.
@@ -50,19 +52,20 @@ Stop the connection to the Sonar desktop.
 /**
 Get the log of state changes from the sonar client
 */
-- (NSString *)getState;
+- (NSString*)getState;
 
 /**
  Get the current summarized state of the sonar client
  */
-- (NSArray<NSDictionary *> *)getStateElements;
+- (NSArray<NSDictionary*>*)getStateElements;
 
 /**
 Subscribe a ViewController to state update change notifications
 */
 - (void)subscribeForUpdates:(id<FlipperStateUpdateListener>)controller;
 
-// initializers are disabled. You must use `+[FlipperClient sharedClient]` instance.
+// initializers are disabled. You must use `+[FlipperClient sharedClient]`
+// instance.
 - (instancetype)init NS_UNAVAILABLE;
 + (instancetype)new NS_UNAVAILABLE;