Add WebGPU Game of Life example with SDL3 and WebAssembly support

[Sangrail]

• Added game of life example that runs on SDL3 with WebGPU (this example is a port of the javascript tutorial you can find here. We use compute shaders to handle the CA logic.
• Uses platform-specific OS handling for both JavaScript (web) and SDL3 (native), just like the SDL3 Triangle example.
• Created build scripts for compiling to WebAssembly for web deployment, just like the SDL3 Triangle example.
• Added HTML template for web application to load the WebAssembly module and JavaScript bindings, just like the SDL3 Triangle example.
• Included necessary shader code for rendering a simple triangle, to render the grid onto.
• Ensured proper memory management and surface configuration for both environments.
• Renamed and moved the triangle rendering example using SDL3 and WebGPU (as we now have two SDL3 examples).

This is my first real work with Odin.

Checklist before submitting:

• [x ] This example has been added to .github/workflows/check.yml (for automatic testing)
• [x ] This example compiles cleanly with flags -vet -strict-style -vet-tabs -disallow-do -warnings-as-errors
• [x ] This example the naming and style convention: https://github.com/odin-lang/examples/wiki/Naming-and-style-convention (exceptions can be made for ports of examples that need to match 1:1 to the original source).
• [x ] By submitting, I understand that this example is made available under these licenses: Public Domain and Odin's BSD-3 license. Only for third-party dependencies are other licenses allowed.