feat(ui): dropdown component

[72mins]

Type-safe dropdown component following the styleguide and colorscheme of the other components.

Allows for both single option select as with a normal dropdown and for link navigation which solves issue #97.

Switching between option select and link navigation is done automatically based on the options array sent to the dropdown as a prop. The placeholders, size, theme, etc.. are also customizable via props as with other components.

Currently, the dropdown is not implemented on the download page, cause I want @mitchellh and @BrandonRomano to check it out for any styling issues or other bugs.

[vercel]

@72mins is attempting to deploy a commit to the Ghostty team on Vercel, but is not a member of this team. To resolve this issue, you can:

• Make your repository public. Collaboration is free for open source and public repositories.
• Add @72mins as a member. A Pro subscription is required to access Vercel's collaborative features.
  • If you're the owner of the team, click here and add @72mins as a member.
  • If you're the user who initiated this build request, click here to request access.
  • If you're already a member of the Ghostty team, make sure that your Vercel account is connected to your GitHub account.

To read more about collaboration on Vercel, click here.

[BrandonRomano]

I'll have some time tomorrow to properly check this one out. Sorry for the delay on this one!

[BrandonRomano]

@72mins - I wanted to clone this down to try out; but I don't have permissions to your repository. I think that this is because you made this PR when the repo was still private & there's some permission issues related to that.

Could you re-open this PR from a public repository so I can check it out?

Sorry for the hiccup I know you have been waiting a bit for a review here!

[72mins]

No worries, I'll get that pushed back up tomorrow.