Remove Value/renderValue public API from "flipper"

Summary:
Moving Value/renderValue API to "database" plugin as these APIs used exclusively by this plugin.

Alternative to that could be moving this API to "flipper-plugin" instead, but I think it doesn't make sense to expose public API which is only used in one plugin.

Reviewed By: mweststrate

Differential Revision: D28110483

fbshipit-source-id: 1576444681c1e0531fe45f0c15f442d65a28f803

desktop/plugins/public/databases/ClientProtocol.tsx

@@ -7,7 +7,7 @@
  * @format
  */
 
-import {Value} from 'flipper';
+import {Value} from './TypeBasedValueRenderer';
 
 type DatabaseListRequest = {};