Added simple authorization for secure login.

[szbk]

When running the application on the remote server, I added simple authorization to prevent others from logging in.

[arunbandari]

@szbk Thanks for the PR. This looks good, but can we make this optional? I mean, if USERNAME and PASSWORD are not defined in the env, then we should directly be able to access the site.

[szbk]

You are right. Some may not want to use it. Especially locally I will edit and send again, is it ok?

[arunbandari]

You are right. Some may not want to use it. Especially locally I will edit and send again, is it ok?

Yes @szbk, it would be great if you modify the code accordingly.

[szbk]

I have optionally revised the user name and password prompt. ⚡️

[arunbandari]

@szbk will you be able to add some details about this feature to the readme, like how to setup and how to disable it?

[szbk]

I added the authentication directive in README.md 🔥