Add abilty to restart flipper server from trouble shoot menu

Summary: Hopefully this will be easier to descibe and find for users than the small icon in mac os menu bar

Reviewed By: passy

Differential Revision: D58282148

fbshipit-source-id: 87f3474c317f38ce906bd3d6ab09b2a2da1557cd

desktop/flipper-ui/src/sandy-chrome/Navbar.tsx

@@ -557,6 +557,13 @@ function TroubleshootMenu() {
               }}>
               Restart ADB (Android connections)
             </Menu.Item>
+            <Menu.Item
+              key="restart-flipper-serer"
+              onClick={() => {
+                getFlipperServer().exec('restart');
+              }}>
+              Restart Flipper Server
+            </Menu.Item>
           </Menu.SubMenu>
         </Menu>
       </Badge>