Added mini project: Nature's Architects

[Kcode727]

Description

Nature’s Architects is a visually immersive web gallery celebrating the engineering marvels of animals.

• Features interactive 3D flip cards with poetic facts about each builder.
• Includes a dynamic, canvas-rendered leaf background for ambiance.
• Offers light/dark mode with animated toggle, and fully responsive layout.

Checklist

• I've been assigned an issue related to this PR.
• I've used beautifiers.
• I've added my Project's name and description to Index.md
• I've made a README.md file for my Project.
• The README.md file of my projrct contains Project title, Description, Use of project, Set up, Stack used and Output (Deployed link).

Related Issues or Pull Requests number

No related issues assigned.
This PR adds a new, original mini-project to the showcase.