Implement login.v1 protocol

[stigok]

https://www.terraform.io/internals/login-protocol

[stigok]

I guess #78 should be reverted again when it's time, to ease implementation of this.

[antonbabenko]

@stigok Do you have any plans to implement this functionality?

[stigok]

@antonbabenko yes, the plans are there, but as usual I'm not sure when I get the time to get around it.

We are looking for an implementation that can handle multiple SSO/SAML providers somewhat generically. The aim is to be able to support GitHub, Google, Azure and more in a simple and straightforward way.

[stigok]

Do you have any ideas?

[antonbabenko]

I see. It will probably be quicker if you need this feature for your own work. I don't have specific features in mind other than just a basic implementation of login protocol.

[stigok]

Could you please elaborate a bit of your thoughts for this? Might spark some ideas for me too.

[antonbabenko]

I thought about just basic implementation of login protocol to be able to login and have a private Terraform module registry experience. Nothing fancy.