[UI]Add all needed UI elements

Profile UI:
    1. VPN Name
    2. VPN Type (Current support PPTP only)
    3. VPN Server
    4. VPN MPPE enable/disable
    5. VPN Username
    6. VPN Password
    7. VPN Auto Connect Mode Selecter
Menu UI:
    1. Edit
    2. Save
    3. Connect
    4. About

Signed-off-by: ethanshan <shan0xiao0xi@gmail.com>