Add wasm32 support to integration tests

[kevinheavey]

I'm not sure if all of this crate works on wasm32 but the integration tests work fine with minor changes to the test code:

• Use wasm_bindgen_test when target_arch = "wasm32"
• Replace #[should_panic] with regular assertions in code, because should_panic doesn't work with wasm_bindgen_test
• Replace u32::MAX in one test with usize::MAX

I also added a wasm-test job to CI

[Lichtso]

Thank you for the contribution! This repository is no longer in use. Please re-open this pull request in the sbpf repo: https://github.com/anza-xyz/sbpf