Add command to install app to flipper server

Summary: There is a new flipper server command to install apps. For android it uses adb (via adb kit) For ios depending on idb availablity it will use idb or xcrun. Consumed in the next diff

Reviewed By: lblasa, aigoncharov

Differential Revision: D36936637

fbshipit-source-id: e09d34d840a9f3bf9136bcaf94fb8ca15dd27cbb

desktop/types/adbkit.d.ts

@@ -75,6 +75,8 @@ declare module 'adbkit' {
       local: string,
       remote: string,
     ) => Promise<boolean>; // TODO: verify correctness of signature
+
+    install: (serial: string, apkPath: string) => Promise<boolean>;
   }
   export function createClient(config: {port: number; host: string}): Client;
 }