[docs] Terms and Conditions for usage of Guardrails Hub

[shivasaxena]

Description
Please add Terms and Conditions for usage of Guardrails Hub.
Current documentation
Checked the Docs, Gaurdrails Hub Footer and the Signup page, but could not find one
Suggested changes
Same as Description

Additional context
With 0.6.0 release for pulling content from Gaurdrails Hub, its mandatory to have an API key, which requires a signup. This is fine for individual users, but in a lot of corporate setups this needs to be vetted before usage, and the once thing that they ask are the T&C of the usage. I saw another issue where the Hub endpoints are getting blocked by some kind of firewalls/proxies and in cases like those too T&C of the usage would be required for whitelisting etc.

Checklist

• I have checked that this issue hasn't already been reported
• I have checked the latest version of the documentation to ensure this issue still exists
• For simple typos or fixes, I have considered submitting a pull request instead

[zsimjee]

Hi,

We're drafting one of these now, will update in the next few days.