Use plugin architecture for Paragraph component

Summary:
Leverage plugin infra for `Paragraph`

Changelog: [Internal]

Reviewed By: mdvacca

Differential Revision: D21404704

fbshipit-source-id: 7565014f1d88c4a0a47e0f10fdb3656b8276b1d0

React/Fabric/Mounting/ComponentViews/RCTFabricComponentsPlugins.h

@@ -38,6 +38,7 @@ Class<RCTComponentViewProtocol> RCTSwitchCls(void) __attribute__((used));
 Class<RCTComponentViewProtocol> RCTUnimplementedNativeViewCls(void) __attribute__((used));
 Class<RCTComponentViewProtocol> RCTModalHostViewCls(void) __attribute__((used));
 Class<RCTComponentViewProtocol> RCTImageCls(void) __attribute__((used));
+Class<RCTComponentViewProtocol> RCTParagraphCls(void) __attribute__((used));
 
 #ifdef __cplusplus
 }

React/Fabric/Mounting/ComponentViews/RCTFabricComponentsPlugins.mm

@@ -27,6 +27,7 @@ Class<RCTComponentViewProtocol> RCTFabricComponentsProvider(const char *name) {
     {"UnimplementedNativeView", RCTUnimplementedNativeViewCls},
     {"ModalHostView", RCTModalHostViewCls},
     {"Image", RCTImageCls},
+    {"Paragraph", RCTParagraphCls},
   };
 
   auto p = sFabricComponentsClassMap.find(name);

React/Fabric/Mounting/ComponentViews/Text/RCTParagraphComponentView.mm

@@ -19,6 +19,7 @@
 #import <react/utils/ManagedObjectWrapper.h>
 
 #import "RCTConversions.h"
+#import "RCTFabricComponentsPlugins.h"
 
 using namespace facebook::react;
 
@@ -169,3 +170,8 @@ using namespace facebook::react;
 }
 
 @end
+
+Class<RCTComponentViewProtocol> RCTParagraphCls(void)
+{
+  return RCTParagraphComponentView.class;
+}