[FEATURE] Bun support

[robertherber]

I'm trying to get a test suite running with Bun, but it seems to use node and jest no matter what I do. Feels like the wiring is under the hood and not configurable. It would be great to be able to run Reassure with Bun :)

[mdjastrzebski]

I do not have too much knowledge about bun.

I've got some questions we could start with:

• What command do you use in bun to run tests
• Does bun uses any form of JIT?
• Can you disable JIT in any way: CLI option, vm object call, etc?

[robertherber]

I only know the answer to the first question - bun test :)

Expo for example is fully supporting Bun with all its tools now, and I get the feeling they're almost recommending it because of it's speed and reduced need for tooling.

Similarly to jest you can specify a test setup file, either with a --preload flag or in a bunfig.toml file.

Hopefully it's just a matter of being able to specify bun as the test runner instead of jest :)

Note that it supports TypeScript and ESM seamlessly, so that takes away a lot of complexity.