Forked React Compiler

• this vendors the React Compiler (Rust port) into react-compiler/
• patches Cargo.toml to make it releasable — published to crates.io as forked_react_compiler_*
• license is "Copyright (c) Meta Platforms, Inc. and affiliates."

Why this exists

oxc and Rolldown need the React Compiler Rust port on crates.io, but published crates can't use git dependencies — every dependency must itself be on crates.io. The port lives only in an unmerged React PR and was never published, so this repo vendors it, patches the crates to be releasable, and publishes them as forked_react_compiler_*.

The source is synced over unchanged — the only edits are to Cargo.toml files (no code changes).