Add basic benchmarks and CI

benches/example.rs

@@ -0,0 +1,34 @@
+#[global_allocator]
+static ALLOC: divan::AllocProfiler = divan::AllocProfiler::system();
+
+fn main() {
+    divan::main();
+}
+
+mod eager {
+    #[divan::bench(max_time = std::time::Duration::from_secs(30))]
+    fn no_entities_mirage() -> csdemo::parser::FirstPassOutput {
+        let raw_bytes = include_bytes!("../testfiles/mirage.dem");
+
+        let container = csdemo::Container::parse(divan::black_box(raw_bytes.as_slice())).unwrap();
+
+        csdemo::parser::parse(
+            csdemo::FrameIterator::parse(container.inner),
+            csdemo::parser::EntityFilter::disabled(),
+        )
+        .unwrap()
+    }
+
+    #[divan::bench(max_time = std::time::Duration::from_secs(30))]
+    fn entities_mirage() -> csdemo::parser::FirstPassOutput {
+        let raw_bytes = include_bytes!("../testfiles/mirage.dem");
+
+        let container = csdemo::Container::parse(divan::black_box(raw_bytes.as_slice())).unwrap();
+
+        csdemo::parser::parse(
+            csdemo::FrameIterator::parse(container.inner),
+            csdemo::parser::EntityFilter::all(),
+        )
+        .unwrap()
+    }
+}