fix: correct typos and improve documentation

[phessophissy]

Summary

This PR fixes typos across multiple component files and significantly improves project documentation by adding a LICENSE file and enhancing the README.

Changes

Typo Fixes
Fixed disaclaimer → disclaimer typo in the following components:

• web-front/src/components/stake/stake.jsx
• web-front/src/components/stake/stake copy.jsx
• web-front/src/components/vote/vote.jsx
• web-front/src/components/propose/propose.jsx
• web-front/src/components/claim/claim.jsx
• web-front/src/components/rewardPools/rewardPools.jsx

Added LICENSE

Added MIT License file to clearly define the project's licensing terms.

README Improvements

• Added badges (License, Ethereum Mainnet)
• Added project overview and description
• Added features section
• Converted contract addresses from HTML table to Markdown table
• Added Getting Started guide with prerequisites and installation steps
• Added Contributing guidelines
• Added Security notice
• Added License section with link
• Added useful links (website, docs, Twitter)

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• Documentation update

Checklist

• My code follows the project's style guidelines
• I have performed a self-review of my changes
• My changes generate no new warnings