Add Render Studio

[Sshady1545]

Summary

• adds Render Studio 1.0.0 by shady
• adds a dedicated render workspace with real-time Three.js lights, shadows, cameras, Minecraft-aware materials, and tiled PNG output
• preserves render lights and settings when switching between Blockbench modes
• adds Phone / Low PC and PC performance profiles
• includes a simplified 96×96 store icon, usage documentation, MIT license, maintainer metadata, and human-readable source

Performance profiles

• Phone / Low PC: 30 FPS preview, 60% preview resolution, basic 512px shadows, 1024px tiles, and 2048px maximum output
• PC: full-speed/full-resolution preview with user-selected shadow and output settings
• marketplace package is approximately 96 KB

Validation

• npm run validate render_studio
• Render Studio core, lifecycle, release metadata, and JavaScript syntax tests

The official repository validator passes with no errors.