Add support for target wasm32-unknown-unknown

[dougEfresh]

I like to add support for wasm32-unknown-uknown target (aka browser support)

Someone already created a client

Without changing much code and using #[cfig.(..)] macro will allow compiling to wasm target.

[chris13524]

What is your use case for WASM support in this repo? The other WalletConnect client you linked doesn't depend on this repo, and we are not planning to create an official WalletConnect Rust client soon.

[dougEfresh]

The repo/crate I reference copied a bunch of code from this repo, e.g. ProjectId
No need to release any official rust client or publish a javascript package.

With respect to use case, rust wasm is gaining momentum. There are several competing and great web frameworks.

The PR is the foundation I need to build webapps/browser extensions that only support reown protocol.

Side note and personal opinion, the rust ecosystem for web developer is more robust and hassle free when compared to javascript/typescript.