[OSPP 2022] run layotto along with istio 1.10.0

[seeflood]

What would you like to be added:
Since the pr mosn/mosn#1664 has been merged, it's time to consider running layotto along with istio 1.10.0

Why is this needed:
Because it's useful and cool

[github-actions]

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[seeflood]

main 分支最新代码升级了 MOSN 版本，现在已经支持 istio 1.10 了（RPC 流量被 MOSN 拦截,能享受 istio 的流量治理功能, 其他 API 走 Layotto)

但是如果用户希望 RPC 走 Layotto 的 invokeService API、而不是被 MOSN 拦截，那 Layotto 需要做下开发、适配，参考 https://mosn.io/layotto/#/zh/start/istio/start

所以，我们现在需要:

• Add a document for how to integrate with istio 1.10 #467
• Layotto 适配开发，让通过 invokeService API 调 Layotto 的 RPC 流量能享受 istio 的流量治理功能

[seeflood]

This issue is an ospp 2022 task