feat(gate)!: wasmtime support

[michael-0acf4]

Motivation and context

Enable support for wit and facilitate readiness for the upcoming specs.

Migration notes

#[wasmedge_bindgen] are replaced by wit bindings.

In the old version we were restricted to#[wasmedge_bindgen], which was only available in Rust and unique to WasmEdge.

#[wasmedge_bindgen]
fn add(a: u32, b: u32) -> u32 {
   a + b
}

In the new implementation, wasm modules written in any language that uses the wit interface are now natively supported within typegate.

// wit/example.wit
package example:host;
world host {
  export add: func(a: u32, b: u32) -> u32;
}

An implementation (eg. in Rust) may look like this..

// src/lib.rs
wit_bindgen::generate!({ world: "host" });
struct MyLib;
impl Guest for MyLib {
    fn add(a: u32, b: u32) -> u32 {
        a + b
    }
}
export!(MyLib);

Checklist

• The change come with new or modified tests
• Hard-to-understand functions have explanatory comments
• End-user documentation is updated to reflect the change

[linear]

MET-447 (gate) wasmtime support

[codecov]

Codecov Report

Attention: Patch coverage is 39.84375% with 77 lines in your changes are missing coverage. Please review.

Project coverage is 73.85%. Comparing base (be4a4ed) to head (8eabc6b).

Files	Patch %	Lines
typegate/src/runtimes/wasm.ts	1.28%	76 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #669      +/-   ##
==========================================
- Coverage   73.94%   73.85%   -0.10%     
==========================================
  Files         114      114              
  Lines       12950    13003      +53     
  Branches     1358     1358              
==========================================
+ Hits         9576     9603      +27     
- Misses       3352     3377      +25     
- Partials       22       23       +1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[zifeo]

Can you add an example in the migration description?

[zifeo]

lgtm, waiting on another review with that large PR :)