* refactor: enhance Mux connection handling in server
* fix: Increase maximum allowed length for RequestURI in Mux connection handling
* feat: Add support for HTTP/2 in Mux mode
* feat: Add support for Mux SSL mode and update related settings
- Introduced a new SSL mode "Mux" in the settings, allowing for HTTP to HTTPS redirection.
- Updated the `SSL` field in the `SettingUpdate` struct to include "Mux" as a valid option.
- Modified the server logic to handle Mux connections, including certificate management and HTTP redirection.
- Updated frontend components to reflect the new SSL options and improved user guidance in multiple languages.
* fix: Update HTTPS related messages for improved clarity and security guidance in multiple languages
KOMATA
CityFun
ssongliu
ssongliu