remove the bevy based turtle and rename turtle-lib-macroquad to turtle-lib

turtle-lib/examples/macro_demo.rs

@@ -0,0 +1,17 @@
+//! Simple demo of the turtle_main macro
+//!
+//! This example shows how the turtle_main macro simplifies turtle programs
+//! by automatically handling window setup, turtle creation, and the render loop.
+
+use turtle_lib::*;
+
+#[turtle_main("Macro Demo - Simple Square")]
+fn draw_square(turtle: &mut TurtlePlan) {
+    turtle.set_pen_color(BLUE);
+    turtle.set_pen_width(3.0);
+
+    for _ in 0..4 {
+        turtle.forward(150.0);
+        turtle.right(90.0);
+    }
+}