Check WASM32 compilation for Cairo1-run

[gabrielbosio]

#1792 was opened to fix an issue related to the WASM compilation of the cairo1-run binary. This issue tracks the status of that PR.

We need to check if those changes still make sense for 3.x.y and 2.x.y.

Also check if compiling cairo1-run works. Do we have to add a job in the CI for this?

[JulianGCalderon]

Compiling cairo1-run for wasm fails with error:

error: the wasm*-unknown-unknown targets are not supported by default, you may need to enable the "js" feature. For more information see: https://docs.rs/getrandom/#webassembly-support
   --> /Users/julian/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/getrandom-0.2.16/src/lib.rs:346:9
    |
346 | /         compile_error!("the wasm*-unknown-unknown targets are not supported by \
347 | |                         default, you may need to enable the \"js\" feature. \
348 | |                         For more information see: \
349 | |                         https://docs.rs/getrandom/#webassembly-support");
    | |________________________________________________________________________^

error[E0433]: failed to resolve: use of unresolved module or unlinked crate `imp`
   --> /Users/julian/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/getrandom-0.2.16/src/lib.rs:402:9
    |
402 |         imp::getrandom_inner(dest)?;
    |         ^^^ use of unresolved module or unlinked crate `imp`
    |
    = help: if you wanted to use a crate named `imp`, use `cargo add imp` to add it to your `Cargo.toml`

This particular error is not addressed in #1792. The issue is valid, as cairo1-run wasm compilation, but the PR is outdated. We would require a new PR for this.

On the other hand, compiling cairo-vm library works correctly.

[JulianGCalderon]

I'll go more in depth on the particular error.

The getrandom crate DOES support wasm compilation, but only when the js feature is enabled. We could force this feature by adding:

getrandom = { version = "0.2.16", features = ["js"] }

Even with this, the compilation fails, because currently cairo1-run depends on the cairo-vm with the std feature enabled.

[JulianGCalderon]

We should also check PR #1830.