Add initial support for doing benchmarking and some starting info on how to build the benchmark stuff with poppler debug info

benches/rendering.rs

@@ -0,0 +1,30 @@
+mod utils;
+
+use utils::render_doc;
+
+use criterion::{criterion_group, criterion_main, Criterion};
+
+fn render_dict(c: &mut Criterion) {
+	c.bench_function(
+		"example dictionary",
+		|b| b.iter(||
+			tokio::runtime::Runtime::new()
+				.unwrap()
+				.block_on(render_doc("./benches/example_dictionary.pdf"))
+		)
+	);
+}
+
+fn render_example(c: &mut Criterion) {
+	c.bench_function(
+		"adobe-provided sample",
+		|b| b.iter(||
+			tokio::runtime::Runtime::new()
+				.unwrap()
+				.block_on(render_doc("./benches/adobe_example.pdf"))
+		)
+	);
+}
+
+criterion_group!(benches, render_dict, render_example);
+criterion_main!(benches);