Initial wgpu abstraction

Source/Color/HslaColor.rs

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+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,
+}

Source/Color/RgbaColor.rs

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+use serde::{Deserialize, Serialize};
+
+#[repr(C)]
+#[derive(Copy, Clone, Debug, PartialEq, Serialize, Deserialize)]
+pub struct RgbaColor {
+    /// Red component. [0.0, 1.0]
+    pub red: f32,
+
+    /// Green component. [0.0, 1.0]
+    pub green: f32,
+
+    /// Blue component. [0.0, 1.0]
+    pub blue: f32,
+
+    /// Alpha component. [0.0, 1.0]
+    pub alpha: f32,
+}

Source/Color/mod.rs

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+#[path = "HslaColor.rs"]
+mod _HslaColor;
+pub use self::_HslaColor::*;
+
+#[path = "RgbaColor.rs"]
+mod _RgbaColor;
+pub use self::_RgbaColor::*;