chore: initial poc of number flow for currency display

[georgewrmarshall]

DO NOT MERGE

Description

This pull request introduces a new test implementation for the number flow library, focusing on its integration with the MetaMask currency display feature. The primary goals are to:

1. Evaluate the library's performance under various scenarios to ensure responsiveness and efficiency.
2. Assess its impact on accessibility, confirming compliance with best practices and usability for all users.

This test is experimental and should not be merged into the main branch until further validation.

Related issues

N/A

Manual testing steps

1. Navigate to the currency settings page in MetaMask.
2. Perform operations involving currency display conversions.
3. Verify the following:
   • Performance benchmarks (loading times, transitions, etc.).
   • Accessibility features (keyboard navigation, screen reader compatibility).

Screenshots/Recordings

motion1080.mov

Pre-merge author checklist

• I've followed MetaMask Contributor Docs and MetaMask Extension Coding Standards.
• Tests for performance and accessibility have been included.
• Documentation updates are included if applicable.
• Appropriate labels have been applied to this PR.

Pre-merge reviewer checklist

• I've manually tested the changes.
• Confirmed the PR addresses its goals without introducing regressions.
• Validated accessibility and performance improvements with evidence.

[github-actions]

CLA Signature Action: All authors have signed the CLA. You may need to manually re-run the blocking PR check if it doesn't pass in a few minutes.

[socket-security]

New dependencies detected. Learn more about Socket for GitHub ↗︎

Package	New capabilities	Transitives	Size	Publisher
npm/@number-flow/[email protected]	None	0	20.4 kB	maxbarvian
npm/[email protected]	None	0	2.84 kB	benmccann
npm/[email protected]	None	0	47.9 kB	maxbarvian

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