* update auto connect use sys work.
* add fast connect.
* update wlan cmd, support scan result report user-level callback.
Co-authored-by: Nzetingxu <zetingxu@bestechnic.com>
Co-authored-by: Nliu2guang <liuguang@rt-thread.com>
Co-authored-by: Nguodi <guodi@rt-thread.com>
Co-authored-by: geniusgogo <xpxyr@sina.com>