docs(intro): embed overview video into Intro document

[hainenber]

docs(intro): embed overview video into Intro document

SUMMARY

Embed existing overview video about Superset into Intro document intro.mdx to help new users having faster understanding visually.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

Before

After

TESTING INSTRUCTIONS

N/A

ADDITIONAL INFORMATION

Closes #28162

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

[github-actions]

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[rusackas]

We might have to move the hosted, but I like the idea!

[hainenber]

We might have to move the hosted, but I like the idea!

While I also share the sentiment of moving the video to some more reliable host, I think we can rely on it for the time being.

[hainenber]

Hello folks, is there anything not desired yet for merging in this PR? :D

[rusackas]

Nothing that needs to actually block the PR, in my book!