feat: support branding

[tlow92]

Implements Feature:

#625

What I did

Support for branding, based on the patches from @trajano. Many thanks!

How it works

export interface Brand {
  // Will replace the storybook logo with this title
  title: string | undefined;
  // This url we be opened when clicking the branded logo or title
  url: string | null | undefined;
  // Either define a url or an image source to replace storybook logo with
  image: string | ImageSourcePropType | null | undefined;
  target: string | null | undefined;
}

[tlow92]

I don't like having this decorator in every story just to make typescript happy. Essentially the problem is only that theme requires a lot of properties that we don't want to define here.
Maybe I missed something to make it easier?

[trajano]

https://github.com/trajano/expo-experiments/blob/4287571d3a9fe568700ce97ecc266d5a5bff621e/packages/my-app/.storybook/index.ts#L11-L16 shows what I did on mine to pass it in, but I cheated with the any because of the imageSource thing which you resolved in web-theme.ts I think.

[trajano]

But I think what you have looks correct. At least for the context of the story.

[trajano]

Can't wait to drop my patches :D

[trajano]

I think just use the existing Storybook logo to prevent having another asset,

[trajano]

https://github.com/trajano/expo-experiments/blob/4287571d3a9fe568700ce97ecc266d5a5bff621e/packages/my-app/.storybook/index.ts#L11-L16 shows what I did on mine to pass it in, but I cheated with the any because of the imageSource thing which you resolved in web-theme.ts I think.

[trajano]

But I think what you have looks correct. At least for the context of the story.

[dannyhw]

Thanks so much for taking the time, I promise I will get to this pr soon. I have a lot going on currently but ideally in this coming week. Feel free to tag me as a reminder if I take too long :).

[trajano]

I updated by patches but should still be the same