Add supernova video to homepage

[harshulgupt]

📝 Description

Type: 🪲 bugfix | 🚀 feature | ☣️ breaking change | 🚦 testing | 📝 documentation | 🎢 infrastructure

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[atharva-2001]

I think the png that was there was a mask- until the video loaded. I'd suggest keeping it as a png and keeping the settings as they were earlier.