How to login the DJI account in MSDK V4?

Our DJI login account page needs to call logIntoDJIUserAccount method. This method will call the API from DJI server, the server will return a code segment of HTML to let the user to log in with. There is no other method.

• Once you have login the DJI account, you don't need to login again.
• Login will require network coverage or you have enabled the login related exempt module in LDM.
• After MSDK 4.16 version, you don't need to login to DJI account to cancel the radius/height limitation of flight controller. Login DJI account will only work for unlock flyzones and use network RTK. If you don't use these 2 features then you don't need to login to your DJI account.