docs: ui revamp

[ale-mazz]

Description

Revamped the documentation UI using guidelines provided by the designer.

• Added tailwindcss support
• Ejected and reworked the Footer
• Replaced the font with Poppins
• Following the guidelines, improved some UI styles and buttons

NOTE: The pwa folder needs to be aligned with the new Desmos icon, please @RiccardoM have a look.

Closes: DW-11

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Author Checklist

All items are required. Please add a note to the item if the item is not applicable and please add links to any relevant follow up issues.

I have...

• [x] included the correct type prefix in the PR title
• [ ] added ! to the type prefix if API or client breaking change
• [ ] targeted the correct branch (see PR Targeting)
• [ ] provided a link to the relevant issue or specification
• [ ] followed the guidelines for building modules
• [ ] included the necessary unit and integration tests
• [ ] added a changelog entry to CHANGELOG.md
• [ ] included comments for documenting Go code
• [ ] updated the relevant documentation or specification
• [ ] reviewed "Files changed" and left comments if necessary
• [ ] confirmed all CI checks have passed

Reviewers Checklist

All items are required. Please add a note if the item is not applicable and please add your handle next to the items reviewed if you only reviewed selected items.

I have...

• [ ] confirmed the correct type prefix in the PR title
• [ ] confirmed ! in the type prefix if API or client breaking change
• [ ] confirmed all author checklist items have been addressed
• [ ] reviewed state machine logic
• [ ] reviewed API design and naming
• [ ] reviewed documentation is accurate
• [ ] reviewed tests and test coverage
• [ ] manually tested (if applicable)

[github-actions[bot]]

👀 Docs preview available here: https://6504c3dd90e9f32affc202d5--desmos-docs.netlify.app