Structural and content changes + bugs + styling

[Niyousha99]

• Teams page
• Styling fixes
• Small bugs (footer size, buttons)
• Start migration to styled components
• Toggle button on resources page
• New animations using framer-motion
• New sponsor
• Add GitHub link to footer
• Homepage textual changes

[github-actions[bot]]

Visit the preview URL for this PR (updated for commit 4360adc):

https://tech-start-website--pr300-dev-hzwvpjv2.web.app

_{(expires Thu, 03 Feb 2022 23:24:28 GMT)}

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