Initial wgpu abstraction

Source/Color/HslaColor.rs

@@ -0,0 +1,17 @@
+use serde::{Deserialize, Serialize};
+
+#[repr(C)]
+#[derive(Copy, Clone, Debug, PartialEq, Serialize, Deserialize)]
+pub struct HslaColor {
+    /// Hue component. [0.0, 360.0]
+    pub hue: f32,
+
+    /// Saturation component. [0.0, 1.0]
+    pub saturation: f32,
+
+    /// Lightness component. [0.0, 1.0]
+    pub lightness: f32,
+
+    /// Alpha component. [0.0, 1.0]
+    pub alpha: f32,
+}