Add `NativeRef` type in LibJIT bindings and generalise native pointer wrapping and unwrapping
Add `NativeRef` type in LibJIT bindings and generalise native pointer wrapping and unwrapping

new-mind/js.rs,TomBebbington/js.rs,synlestidae/js.rs,TomBebbington/js.rs,synlestidae/js.rs,new-mind/js.rs