lark-shared

Feishu/Lark CLI shared fundamentals: application configuration initialization, authentication login (auth login), identity switching (--as user/bot), permission and scope management, handling of Permission denied errors, and security rules. Triggered when a user needs to perform first-time configuration (`lark-cli config init`), use login authorization (`lark-cli auth login`), encounters insufficient permissions, switches between user and bot identities, configures scopes, or uses lark-cli for the first time.