Macro cml_core_wasm::impl_wasm_conversions

macro_rules! impl_wasm_conversions {
    ($rust:ty, $wasm:ty) => { ... };
}

Various code-generation macros to help with WASM wrapper creation. Includes many things that auto-generated by cddl-codegen so we can use these with utility code that had to be hand-written. Auto-declare From/AsRef conversions between rust and WASM wrappers