feat: implement hypha branding

[Alex-IS]

Package has been published and can be found at https://www.npmjs.com/package/@hypha-dao/ual-hypha

This PR implements following:

• implements Hypha Branding
• implements logout action
• adds support for configuring login contract and specifying button label
• implements github action to deploy on created release

[n13]

I can test login here but unable to see the result, as the demo app then turns to a white screen...

[Alex-IS]

@n13 I've updated it and also added a github action to publish automatically. Please test