* update ZapButton component to handle zap requests and receipts; add react-qr-code dependency for QR code generation.
* Enhance ZapButton component to track payment completion; add visual feedback for successful payments and improve event handling for zap receipts.
* Enhance ZapButton component to provide visual feedback for payment completion; update QR code display and messaging based on payment status.
* feat: add QR code link for direct payment and improve invoice display logic
* fix: encode signed zap request before appending to params
* fix: rm encodeURIComponent
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Co-authored-by: highperfocused <highperfocused@pm.me>
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