Chore/move to async for prompts

[sendilkumarn]

---

Please make sure the below checklist is followed for Pull Requests.

• All continuous integration tests are green
• Tests are added where necessary - NA
• jhipster-online was updated if necessary - NA
• Documentation is added/updated where necessary - NA
• Coding Rules & Commit Guidelines as per our CONTRIBUTING.md document are followed

When you are still working on the PR, consider converting it to Draft (bellow reviewers) and adding skip-ci label, you can still see CI build result at your branch.

[avdev4j]

Hi @sendilkumarn
what is the main pros to move to async function instead of using "done()"?

[mshima]

LGTM

[mshima]

Hi @sendilkumarn
what is the main pros to move to async function instead of using "done()

I see the following reasons:

• more linear, in this case 1 level is not too much.
• better error handling: promises should have a catch block.
• easier then promise notation new Promise().then(resolved => done(undefined, resolved), error => done(error))

[sendilkumarn]

All that @mshima told + more readability