1. close all proxies directly when reset_proxy
2. init_sysproxy and update_sysproxy combined into one
3. optimize lock usage
4 ptimize the thread loop of guard_sysproxy,
* fixup! feat: Service Mode for Linux (#804)
* fixup! feat: Service Mode for Linux (#804)
* Partially revert "fixup! feat: Service Mode for Linux (#804)"
This reverts commit e6a5a2b496.