Modifying semi rule to support for await

[kobelb]

The async iterator proposal adds support for the following code

for await (const line of readLines(filePath)) {
  console.log(line);
}

async function* readLines(path) {
  let file = await fileOpen(path);

  try {
    while (!file.EOF) {
      yield await file.readLine();
    }
  } finally {
    await file.close();
  }
}

However, the ESLint rule expects there to be a semi-colon. Since this is currently a stage-3 proposal, the ESLint team has declined implementing it at this time per eslint/eslint#7417

[kentcdodds]

Looks good to me!

[kentcdodds]

Thanks a ton for the contribution 👍