Auto-login - Save username or key to config file

If you want to add auto login to your software to save username or key to config file so you can have a "remember me" functionality, please look at some of the examples we have.

https://github.com/KeyAuth/KeyAuth-CPP-Example/blob/a447cf2c6625acc65a76b2d03b5f34a96729b0ea/main.cpp#L45

https://github.com/KeyAuth/KeyAuth-Python-Example/blob/eca4723e76faca86de12e7117f3379326d63142f/main.py#L91

For other use-cases, please refer to websites such as https://stackoverflow.com/ and https://www.google.com/, thank you.