chore: add Cargo.lock to version control (#2993)

Author: tusharmath

.gitignore

@@ -4,9 +4,6 @@ debug/
 target/
 jobs/**
 
-# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
-# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
-Cargo.lock
 
 # These are backup files generated by rustfmt
 **/*.rs.bk