Added Gif to getting_started.md

[mohitjaisal]

Improving SEO & Page load time

Changes done:

• I've added high-quality Demo Gifs (Converted Videos into high-quality gifs)
• Gifs are fully optimized and compressed
• Removed video tags from getting_started.md
• Rename it and added -circuitverse in each gif example: drag-circuitverse and added alt with the same name (these changes are for SEO improvements)
• Gif will increase page loading time and will be smooth and clean for users
• It will be helpful in the future, we can add high-quality gifs with small file sizes and images that are more SEO-friendly than videos.

GIF Screenshots:

Preview Link(s):

https://github.com/mohitjaisal/CircuitVerseDocs/blob/master/docs/getting_started.md

✅️ By submitting this PR, I have verified the following

• Checked to see if a similar PR has already been opened 🤔️
• Reviewed the contributing guidelines 🔍️
• Sample preview link added (add a link from the checks tab after checks complete)
• Tried Squashing the commits into one

[mohitjaisal]

@Shivansh2407 Please Review!

[Shivansh2407]

Hi @mohitjaisal, Nice work done here! Just wanted to inform that we're currently transforming the Docs and #282 is the PR for the same. You can improve any of the issues you face in that, or also can enhance SEO and Page Load time for the new Docs site.
Keep Contributing 🎉