Add new metadata to gateways.

[LDannijs]

Summary

Add some metadata to the gateway docs for use in the Partner Portal per requested by @benolayinka

Why do we need this ?

To make it easier to add the info of a gateway to the Partner Portal.

What is already there? What do you see now?

Basic metadatam like title, description

What is missing? What do you want to see?

More metadata like vendor, ip rating, backhaul, etc.

How do you propose to document this?

It's all frontmatter, so documentation isn't necessary.

Can you do this yourself and submit a Pull Request?

Yes.

[KrishnaIyer]

@LDannijs: Please fill out the issue template properly.

[nejraselimovic]

Closing this since the referenced PR is merged