Introduce menu entry support

Summary:
[interesting] since it shows how Flipper APIs are exposed through sandy. However, the next diff is a much simpler example of that

This diff adds support for adding menu entries for sandy plugin (renamed keyboard actions to menus, as it always creates a menu entry, but not necessarily a keyboard shortcut)

```

  client.addMenuEntry(
    // custom entry
    {
      label: 'Reset Selection',
      topLevelMenu: 'Edit',
      handler: () => {
        selectedID.set(null);
      },
    },
    // based on built-in action (sets standard label, shortcut)
    {
      action: 'createPaste',
      handler: () => {
        console.log('creating paste');
      },
    },
  );
```

Most of this diff is introducing the concept of FlipperUtils, a set of static Flipper methods (not related to a device or client) that can be used from Sandy. This will for example be used to implement things as `createPaste` as well

Reviewed By: nikoant

Differential Revision: D22766990

fbshipit-source-id: ce90af3b700e6c3d9a779a3bab4673ba356f3933

desktop/app/src/devices/BaseDevice.tsx

@@ -8,7 +8,7 @@
  */
 
 import stream from 'stream';
-import {DeviceLogListener} from 'flipper';
+import type {DeviceLogListener} from 'flipper';
 import {sortPluginsByName} from '../utils/pluginUtils';
 import {
   DeviceLogEntry,
@@ -16,7 +16,8 @@ import {
   SandyPluginDefinition,
   DeviceType,
 } from 'flipper-plugin';
-import {DevicePluginMap, FlipperDevicePlugin} from '../plugin';
+import type {DevicePluginMap, FlipperDevicePlugin} from '../plugin';
+import {getFlipperLibImplementation} from '../utils/flipperLibImplementation';
 
 export type DeviceShell = {
   stdout: stream.Readable;
@@ -180,7 +181,11 @@ export default class BaseDevice {
         this.devicePlugins.push(plugin.id);
         this.sandyPluginStates.set(
           plugin.id,
-          new SandyDevicePluginInstance(this, plugin),
+          new SandyDevicePluginInstance(
+            getFlipperLibImplementation(),
+            plugin,
+            this,
+          ),
         ); // TODO T70582933: pass initial state if applicable
       }
     } else {