Big #noStrudel update today, Zap splits and UI improvements.

Changes:

- Add option to configure zap splits when writing notes

- Add support for paying zap splits

- Better dark theme

- Update all icons

- Add new sign up view

Other smaller changes

- Add a redeem button for cashu tokens

- Add stemstr embeds

- Show repost counts on notes

- Show badges on user profiles

- Support video and audio file uploads to nostr.build

If you've been following me or have been using the alpha version some of these aren't new, but these "updates" are just me moving the new features from the alpha version to the stable version.