* extract curve25519 crate
* remove obsolete comment
* fix Cargo.toml files
* fix imports
* update lock file
* remove unused deps from zk-token-sdk
* fmt
* add solana-curve25519 patch
* add missing override to programs/sbf/Cargo.toml
* copy over an allow()
* move new crate to curves dir
* use workspace version
* add back missing dev dep
* add missing dependencies to programs/sbf
* fmt
* move dep to the correct dependency table
* remove #[cfg(not(target_os = "solana"))] above errors mod