[ReactNative] Move module info from bridge to RCTModuleData

Summary:
@public

The info about bridge modules (such as id, name, queue, methods...) was spread
across arrays & dictionaries on the bridge, move it into a specific class.

It also removes a lot of information that was statically cached, and now have
the same lifecycle of the bridge.

Also moved RCTModuleMethod, RCTFrameUpdate and RCTBatchedBridge into it's own
files, for organization sake.

NOTE: This diff seems huge, but most of it was just moving code :)

Test Plan:
Tested UIExplorer & UIExplorer tests, Catalyst, MAdMan and Groups. Everything
looks fine.

React/Base/RCTModuleData.h

@@ -0,0 +1,35 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import "RCTJavaScriptExecutor.h"
+
+@interface RCTModuleData : NSObject
+
+@property (nonatomic, weak, readonly) id<RCTJavaScriptExecutor> javaScriptExecutor;
+@property (nonatomic, strong, readonly) NSNumber *uid;
+@property (nonatomic, strong, readonly) id<RCTBridgeModule> instance;
+
+@property (nonatomic, strong, readonly) Class cls;
+@property (nonatomic, copy, readonly) NSString *name;
+@property (nonatomic, copy, readonly) NSArray *methods;
+@property (nonatomic, copy, readonly) NSDictionary *config;
+
+@property (nonatomic, strong) dispatch_queue_t queue;
+
+- (instancetype)initWithExecutor:(id<RCTJavaScriptExecutor>)javaScriptExecutor
+                             uid:(NSNumber *)uid
+                        instance:(id<RCTBridgeModule>)instance NS_DESIGNATED_INITIALIZER;
+
+
+- (void)dispatchBlock:(dispatch_block_t)block;
+- (void)dispatchBlock:(dispatch_block_t)block dispatchGroup:(dispatch_group_t)group;
+
+@end