Improve performance of AST parse

[styfle]

We currently use acorn for parsing JS into the AST, however there are faster alternatives now.

One of the fastest, @swc/core, is used by Next.js so its perhaps possible to parse once and share the AST so that nft wouldn't need to parse again. However, this could lead to a major rewrite since the AST is not compatible.

• Related Issue: ESTree compatible AST swc-project/swc#2123
• Docs: https://swc.rs/docs/usage/core

Another alternative, hermes-parser, is used by React Native and should have the same AST format (ESTree) which might mean its a drop-in replacement for acorn.

• Package: https://www.npmjs.com/package/hermes-parser
• Repo: https://github.com/facebook/hermes