Partners, customers and more (#19862)

## Summary
- Refresh the Twenty website with updated homepage, product, pricing,
partner, customer, case study, and release content
- Add and replace supporting imagery, illustrations, and Lottie assets
used across the site
- Adjust layout constants, navigation/footer content, and page-level
copy for the updated marketing experience
- Update Next.js config and ignore rules to support the new assets and
build output

## Testing
- Not run (not requested)

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Co-authored-by: Abdullah <125115953+mabdullahabaid@users.noreply.github.com>

.gitignore

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 **/**/.env
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