According to Harness docs, the default cache key is a hash of detected lock files: https://developer.harness.io/docs/continuous-integration/use-ci/caching-ci-data/cache-intelligence#customize-cache-keys

We are using a build tool that harness doesn't support, and parallel stages. Both cases require custom cache keys. However, we still want to use the hash of our lockfiles in the cache key.

Please add a function for computing file hashs