Added benchmarking

day_01/Cargo.toml

@@ -6,3 +6,14 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+
+[dev-dependencies]
+criterion = { version = "0.4", features = ["html_reports"] }
+
+[[bench]]
+name = "part1"
+harness = false
+
+[[bench]]
+name = "part2"
+harness = false