Add Hq{2,3,4}x (#624)

* Scaling works on native

* It works in wasm

* Integrate with UI

* Remove benchmark

* Integrate Hqx into Resizer module

* Link against repo for hqx

* Remove unused defaultOpts

* Re-add test file

* Adding size dropdown

* Chrome: go and sit on the naughty step

* Better docs

* Review

* Add link to crbug

* Update src/codecs/processor-worker/index.ts

Co-Authored-By: Jake Archibald <jaffathecake@gmail.com>

* Terminate worker inbetween resize jobs

codecs/hqx/src/utils.rs

@@ -0,0 +1,17 @@
+use cfg_if::cfg_if;
+
+cfg_if! {
+    // When the `console_error_panic_hook` feature is enabled, we can call the
+    // `set_panic_hook` function at least once during initialization, and then
+    // we will get better error messages if our code ever panics.
+    //
+    // For more details see
+    // https://github.com/rustwasm/console_error_panic_hook#readme
+    if #[cfg(feature = "console_error_panic_hook")] {
+        extern crate console_error_panic_hook;
+        pub use self::console_error_panic_hook::set_once as set_panic_hook;
+    } else {
+        #[inline]
+        pub fn set_panic_hook() {}
+    }
+}