Introduce opentelemetry in rewatch and setup new test infrastructure

[nojaf]

This is a subset of #8231.

I wish to introduce open telemetry in Rewatch and migrate the bash tests to a new test suite.

The new tests would look like:

describe("build", () => {
  it("builds all packages from root", () =>
    runRewatchTest(async ({ cli }) => {
      await cli.build();
    }));
});

Where we capture all telemetry traces produced inside runRewatchTest and extract a deterministic snapshot of this:

// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html

exports[`build > builds all packages from root 1`] = `
[
  "rewatch.build[working_dir=.]",
  "  initialize_build",
  "    packages.make",
  "      build.load_package_sources[package=@rewatch-test/app]",
  "      build.load_package_sources[package=@rewatch-test/library]",
  "      build.load_package_sources[package=rewatch-test-fixture]",
  "    packages.parse_packages",
  "    clean.cleanup_previous_build",
  "  incremental_build[module_count=3]",
  "    build.parse[dirty_modules=3]",
  "    build.compile",
  "      build.compile_wave[file_count=1]",
  "        build.compile_file[module=Library]",
  "      build.compile_wave[file_count=1]",
  "        build.compile_file[module=App]",
  "      build.compile_wave[file_count=1]",
  "        build.compile_file[module=Root]",
]
`;

With this telemetry we can easily update snapshots and assert all still works as expected.
By using Vitest we also have a proper test runner, so can run individual tests.
All tests also run in a sandbox folder in the /tmp, we they cannot interfere with each other.
And they can run in parallel.

The goal is too replace and remove the existing bash tests.