Commit esy.lock.json?

[aantron]

This should improve the installation of the BuckleScript package:

• It would prevent surprise breakage from dependency changes.
• It would consistently reuse the esy cache, since dependencies aren't changing.

[aantron]

It may have the downside, though, that installs will sometimes take longer, because Bisect_ppx needs old dependencies that aren't in cache for an esy user of projects that are keeping up with updates.

[aantron]

A further disadvantage is that without esy.lock.json, if #220 is also solved, Bisect_ppx will automatically support future versions of BuckleScript when they change the OCaml compiler. if the underlying OMP is upgraded. So, without esy.lock.json, old releases of Bisect_ppx become forward-compatible, while with esy.lock.json, each release of Bisect_ppx is limited to some unknown future version of BuckleScript.

[aantron]

It's probably possible to have a partial esy.lock.