read infos from package.json

Summary:
Adding the properties from a plugin's `package.json` as static properties to the class.
The name from `package.json` is used as it's `id`.

This allows us in the future to add meta information about a plugin to it's package.json and still use the data inside the app.

Reviewed By: priteshrnandgaonkar

Differential Revision: D13417288

fbshipit-source-id: 3d0a62d4cb0115153cce1aaee677b9680fefebf4

src/PluginContainer.js

@@ -120,9 +120,8 @@ class PluginContainer extends PureComponent<Props> {
       <React.Fragment>
         <Container key="plugin">
           <ErrorBoundary
-            heading={`Plugin "${
-              activePlugin.title
-            }" encountered an error during render`}
+            heading={`Plugin "${activePlugin.title ||
+              'Unknown'}" encountered an error during render`}
             logger={this.props.logger}>
             {React.createElement(activePlugin, props)}
           </ErrorBoundary>