Feat: New website

[thisisobate]

Todo

• change theme font
• Add new video resource section
• create hero section
• create why serverless section
• update knative components section
• update navbar with new design
• Make mobile responsive
• Update icons to match accordingly
• Polish website to be pixel perfect
• Cleanup code

Fixes #6277

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[knative-prow]

Welcome @thisisobate! It looks like this is your first PR to knative/docs 🎉

[knative-prow]

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