[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/RCTBridge.h

@@ -118,6 +118,11 @@ RCT_EXTERN NSString *RCTBridgeModuleNameForClass(Class bridgeModuleClass);
  */
 @property (nonatomic, readonly, getter=isLoading) BOOL loading;
 
+/**
+ * The block passed in the constructor with pre-initialized modules
+ */
+@property (nonatomic, copy, readonly) RCTBridgeModuleProviderBlock moduleProvider;
+
 /**
  * Reload the bundle and reset executor & modules. Safe to call from any thread.
  */