Fix version on refmt

[davesnx]

This PR is a step close to solve the issue with the release process being broken. Fixing the version on running refmt --version

This would always print the version from dune-project which would need to be in sync with reason.json, package.json, esy.json which is not ideal.

• Using build_info from dune to display version (defined in dune-project)
• Using dune rule to get the commit hash and write it to git_commit.ml
• Remove pre-release on Makefile
• Set ocaml to 4.14 and ocaml-lsp to 1.15 for development

In the future the publish is going to be automated by CI, only updating the version on the dune-project file will propagate to all releases.