Always generate the EventEmitters (#34750)

Summary:
Pull Request resolved: #34750

This Diff is the first step of enabling the CodeGen  to parse and generate a NativeState for the components.

The feature has been largely requested by the OSS community but it could be also helpful for people in Meta.

To allow the generation of custom `NativeState`, we first have to always generate a `ViewEventEmitter`: that's because the `ConcreteShadowNode` template lists the Generics with this order: `Name`, `Props`, `EventEmitter`, Others...
If we skip the `EventEmitters` and we put the `State`, React Native would think that the State is actually an `EventEmitter` and the build step will fail.

## Changelog
[General][Added] - Always generate a ViewEventEmitter for Fabric Components

Reviewed By: cortinico

Differential Revision: D39509869

fbshipit-source-id: 390cc146ef013baf1ed09d55a0182a5aeb5b9d9e

Author: Riccardo Cipolleschi

packages/react-native-codegen/e2e/__tests__/components/__snapshots__/GenerateEventEmitterH-test.js.snap

@@ -19,7 +19,14 @@ Object {
 namespace facebook {
 namespace react {
 
+class JSI_EXPORT ArrayPropsNativeComponentViewEventEmitter : public ViewEventEmitter {
+ public:
+  using ViewEventEmitter::ViewEventEmitter;
 
+  
+
+  
+};
 
 } // namespace react
 } // namespace facebook
@@ -46,7 +53,14 @@ Object {
 namespace facebook {
 namespace react {
 
+class JSI_EXPORT BooleanPropNativeComponentViewEventEmitter : public ViewEventEmitter {
+ public:
+  using ViewEventEmitter::ViewEventEmitter;
 
+  
+
+  
+};
 
 } // namespace react
 } // namespace facebook
@@ -73,7 +87,14 @@ Object {
 namespace facebook {
 namespace react {
 
+class JSI_EXPORT ColorPropNativeComponentViewEventEmitter : public ViewEventEmitter {
+ public:
+  using ViewEventEmitter::ViewEventEmitter;
+
+  
 
+  
+};
 
 } // namespace react
 } // namespace facebook
@@ -100,7 +121,14 @@ Object {
 namespace facebook {
 namespace react {
 
+class JSI_EXPORT EdgeInsetsPropNativeComponentViewEventEmitter : public ViewEventEmitter {
+ public:
+  using ViewEventEmitter::ViewEventEmitter;
+
+  
 
+  
+};
 
 } // namespace react
 } // namespace facebook
@@ -127,7 +155,14 @@ Object {
 namespace facebook {
 namespace react {
 
+class JSI_EXPORT EnumPropNativeComponentViewEventEmitter : public ViewEventEmitter {
+ public:
+  using ViewEventEmitter::ViewEventEmitter;
+
+  
 
+  
+};
 
 } // namespace react
 } // namespace facebook
@@ -281,7 +316,14 @@ Object {
 namespace facebook {
 namespace react {
 
+class JSI_EXPORT FloatPropsNativeComponentViewEventEmitter : public ViewEventEmitter {
+ public:
+  using ViewEventEmitter::ViewEventEmitter;
+
+  
 
+  
+};
 
 } // namespace react
 } // namespace facebook
@@ -308,7 +350,14 @@ Object {
 namespace facebook {
 namespace react {
 
+class JSI_EXPORT ImagePropNativeComponentViewEventEmitter : public ViewEventEmitter {
+ public:
+  using ViewEventEmitter::ViewEventEmitter;
+
+  
 
+  
+};
 
 } // namespace react
 } // namespace facebook
@@ -335,7 +384,14 @@ Object {
 namespace facebook {
 namespace react {
 
+class JSI_EXPORT IntegerPropNativeComponentViewEventEmitter : public ViewEventEmitter {
+ public:
+  using ViewEventEmitter::ViewEventEmitter;
 
+  
+
+  
+};
 
 } // namespace react
 } // namespace facebook
@@ -398,7 +454,14 @@ Object {
 namespace facebook {
 namespace react {
 
+class JSI_EXPORT MultiNativePropNativeComponentViewEventEmitter : public ViewEventEmitter {
+ public:
+  using ViewEventEmitter::ViewEventEmitter;
+
+  
 
+  
+};
 
 } // namespace react
 } // namespace facebook
@@ -425,7 +488,14 @@ Object {
 namespace facebook {
 namespace react {
 
+class JSI_EXPORT NoPropsNoEventsNativeComponentViewEventEmitter : public ViewEventEmitter {
+ public:
+  using ViewEventEmitter::ViewEventEmitter;
+
+  
 
+  
+};
 
 } // namespace react
 } // namespace facebook
@@ -452,7 +522,14 @@ Object {
 namespace facebook {
 namespace react {
 
+class JSI_EXPORT ObjectPropsNativeComponentEventEmitter : public ViewEventEmitter {
+ public:
+  using ViewEventEmitter::ViewEventEmitter;
 
+  
+
+  
+};
 
 } // namespace react
 } // namespace facebook
@@ -479,7 +556,14 @@ Object {
 namespace facebook {
 namespace react {
 
+class JSI_EXPORT PointPropNativeComponentViewEventEmitter : public ViewEventEmitter {
+ public:
+  using ViewEventEmitter::ViewEventEmitter;
 
+  
+
+  
+};
 
 } // namespace react
 } // namespace facebook
@@ -506,7 +590,14 @@ Object {
 namespace facebook {
 namespace react {
 
+class JSI_EXPORT StringPropNativeComponentViewEventEmitter : public ViewEventEmitter {
+ public:
+  using ViewEventEmitter::ViewEventEmitter;
+
+  
 
+  
+};
 
 } // namespace react
 } // namespace facebook