[Mozilla Branding Removal] Removing branding

[markusTraber]

• For Github-Actions (.github/workflows/dialog.yml) I've changed the registry to "Hubs-Foundation", even though this account seemingly does not exist (yet?)
• Codeowners: Just referenced the org here, without referencing any team
• As for Habitat (habitat/plan.sh): I changed origin and maintainer. But it does have dependencies to Mozilla packages. Is Habitat even still relevant for us?

[Exairnous]

Thanks! This is looking good.
I've left a couple inline comments and I'll check in with the rest of the governance team about the docker registry.

As for the Habitat stuff, I don't know, it seems to be included in a couple repositories, but I'm not sure if it's still being used or not. I'll ask some of the former Hubs team members about this in the Discord.

[DougReeder]

I checked that the new URLs work.

Overall, this LGTM.