[SSH]Optimize the connection method to automatically recognize identity files and support multiple key sources, including SSH Agent.
[RDP] Add the feature of automatic reconnection.
[TERM] Fixed the issue of garbled characters caused by multi country font input methods when remote session fonts are not UTF8 fonts.
[RLogin and Telnet] Remove the related impact of QWoLoadingWidget to make it consistent with SSH.
[Tunnel] Add session multiplexing switch to allow users to adjust parameters based on actual situations.
[SHELL] Fix the issue of local terminal exit without prompt.