Initialize Minecraft text generator project with basic structure and CLI functionality

crates/lib/src/models.rs

@@ -0,0 +1,13 @@
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
+pub enum VoxelType {
+    Body,
+    Outline,
+    Shadow,
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub struct Point3D {
+    pub x: u32,
+    pub y: u32,
+    pub z: u32,
+}