const_shader_layout 0.1.0

Compile-time checks for whether structs conform to WGSL's memory layout rules
Documentation 
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# Compile-time checks for whether structs conform to WGSL's [memory layout rules](https://www.w3.org/TR/WGSL/#alignment-and-size).

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This provides `shader_layout!` macro and `ShaderLayout` trait. Usage:
```rust
shader_layout! {
    pub struct MyUniform {
        a1: f32,
        a2: [f32; 2],
        a3: [f32; 1],
        a4: Vec3,
        a5: f32
    }
}
```

See <https://github.com/beicause/const_shader_layout/tree/master/tests> for what this supports and checks.

[Uniform address space layout constraints](https://www.w3.org/TR/WGSL/#address-space-layout-constraints) is not checked yet.