Update gaming-tools.md

[Alonso287]

Description

Added ShaderLABS and Cubical Beta

Context

ShaderLABS is a wiki page dedicated to listing shaderpacks and sharing developer resources. I also added Cubical Beta because it adds support for blocks of modern versions of the game

Types of changes

• [ ] Bad / Deleted sites removal
• [ ] Grammar / Markdown fixes
• [x] Content addition (sites, projects, tools, etc.)
• [ ] New Wiki section

Checklist:

• [x] I have read the contribution guide.
• [x] I have made sure to search before making any changes.
• [x] My code follows the code style of this project.