use npm to remove submodule entirely

[reecepbcups]

Solidity: npm install @wavs/solidity
Rust: cargo install wavs-types & cargo install wavs-wasi-chain
WIT: target = "wavs:worker/layer-trigger-world@0.3.0-alpha2" in Cargo.toml's package.metadata.component

[reecepbcups]

changed in #26

forge-std is still used, but I think this may be a requirement without using soldeer. closing as completed for now