Implement context menu

Summary:
Re-introduced context menu to DataTable, due to popular demand.

Originally it wasn't there to better align with ant design principles, but in an app like Flipper it makes just too much sense to have it

See e.g. https://fb.workplace.com/groups/flippersupport/permalink/1138285579985432/

changelog: Restored context menu in data tables

Reviewed By: passy

Differential Revision: D28996137

fbshipit-source-id: 16ef4c90997c9313efa62da7576fd453a7853761

desktop/plugins/public/flipper-messages/__tests__/flipper_messages.node.tsx

@@ -116,7 +116,7 @@ test('It can render rows', async () => {
   expect((await renderer.findByText('unique-string')).parentElement)
     .toMatchInlineSnapshot(`
     <div
-      class="css-1k3kr6b-TableBodyRowContainer e1luu51r1"
+      class="ant-dropdown-trigger css-1k3kr6b-TableBodyRowContainer e1luu51r1"
     >
       <div
         class="css-1vr131n-TableBodyColumnContainer e1luu51r0"