Add a yolo-v3 example. (#528)

* Add a couple functions required for yolo.

* Add the yolo-v3 example.

* Add minimum and maximum.

* Use the newly introduced maximum.

* Cuda support for min/max + add some testing.

* Allow for more tests to work with accelerate.

* Fix a typo.

candle-examples/examples/quantized/main.rs

@@ -1,4 +1,10 @@
 #![allow(dead_code)]
+#[cfg(feature = "mkl")]
+extern crate intel_mkl_src;
+
+#[cfg(feature = "accelerate")]
+extern crate accelerate_src;
+
 use clap::Parser;
 use std::collections::HashMap;
 use std::io::Write;