Improve dependency gating on objdiff-core (#126)

* Reduce dependencies for no features

* Add missing deps to every feature

* Add missing `dep:`s

* Gate even more deps behind features

Removes dependency on tsify-next / wasm-bindgen unless
compiling with the wasm feature by using `#[cfg_attr]`

* Fix wasm

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Co-authored-by: Luke Street <luke@street.dev>

objdiff-core/src/lib.rs

@@ -8,4 +8,5 @@ pub mod config;
 pub mod diff;
 #[cfg(feature = "any-arch")]
 pub mod obj;
+#[cfg(feature = "any-arch")]
 pub mod util;