MVC2: Feishu Bot Command

Problem to solve

Feishu belongs to ByteDance(developed TikTok).

It contains functions like messaging, video conferencing, schedule management, collaborative documents, cloud storage, email, and workflow applications.

Its international version is Lark, more English description.

Feishu's competitor in China is Dingtalk(belonging to Alibaba).

Proposal

PRD is in https://docs.google.com/document/d/1Vt7j-A93MdSbM4P4gKGtC8e9WKWV4yajq8TZCNX7yMg/edit#heading=h.acvdofzfnuzy