async function runLavamoat({ args = [], cwd = process.cwd() } = {}) {
  const lavamoatPath = require.resolve('../src/cli')
  const output = await execFile(lavamoatPath, args, { cwd })
  return { output }
}
Runs Lavamoat CLI
@param {{args?: string[], cwd?: string}} opts
@returns {Promise<{output: {stdout: string, stderr: string}}>}