new icon: shadcn (original)

[Yashh56]

Double check these details before you open a PR

• [ ] PR does not match another non-stale PR currently opened
• [ ] PR name matches the format new icon: Icon name (versions separated by comma). More details here
• [ ] PR's base is the develop branch.
• [ ] Your icons are inside a folder as seen here
• [ ] SVG matches the standards laid out here
• [ ] A new object is added in the devicon.json file at the correct alphabetic position as seen here

This PR closes #2597

Link to prove your SVG is correct and up-to-date.

[Yashh56]

Hey @weh, can I get an Review on this PR?