Add CTC Decoder for Wave2Vec models (#693)

* Rust - add a CTCDecoder as a seperate mod

* Adding bindings to Node + Python.

* Clippy update.

* Stub.

* Fixing roberta.json URLs.

* Moving test files to hf.co.

* Update cargo check and clippy to 1.52.

* Inner ':' actually is used for domains in sphinx.

Making `domain` work correctly was just too much work so I went the easy
way and have global roles for the custom rust extension.

* Update struct naming and docs

* Update changelog

Co-authored-by: Thomaub <github.thomaub@gmail.com>
Co-authored-by: Anthony MOI <m.anthony.moi@gmail.com>

bindings/python/src/utils/iterators.rs

@@ -15,7 +15,7 @@ where
     I: Iterator,
 {
     pub fn new(iter: I, length: Option<usize>) -> Self {
-        Self { iter, length }
+        Self { length, iter }
     }
 }