add basic triangle_2d rendering criterion benchmark

just so i have it here for when i try to implement optimizations (again)

ggdt/Cargo.toml

@@ -38,3 +38,7 @@ harness = false
 [[bench]]
 name = "loading"
 harness = false
+
+[[bench]]
+name = "triangles"
+harness = false

ggdt/benches/triangles.rs

@@ -0,0 +1,24 @@
+use criterion::{black_box, criterion_group, criterion_main, Criterion};
+
+use ggdt::prelude::*;
+
+pub fn criterion_benchmark(c: &mut Criterion) {
+	let width = 320;
+	let height = 240;
+
+	let mut dest = IndexedBitmap::new(width, height).unwrap();
+
+	c.bench_function("indexedbitmap_triangle_2d_solid_color", |b| {
+		b.iter(|| {
+			dest.triangle_2d_solid_color(
+				black_box(Vector2::new(47.0, 23.0)),
+				black_box(Vector2::new(60.0, 192.0)),
+				black_box(Vector2::new(280.0, 153.0)),
+				black_box(5),
+			);
+		})
+	});
+}
+
+criterion_group!(benches, criterion_benchmark);
+criterion_main!(benches);