feat: return address of dev server from buildDevStandalone

[tobiasdiez]

What I did

I currently use buildDevStandalone to start a dev server (by code), and to show a nice message to the user afterwards, I would like to get the server address. Thus, this information is returned now as well.

How to test

Checklist

• Make sure your changes are tested (stories and/or unit, integration, or end-to-end tests)
• Make sure to add/update documentation regarding your changes
• If you are deprecating/removing a feature, make sure to update
  MIGRATION.MD

Maintainers

• If this PR should be tested against many or all sandboxes,
  make sure to add the ci:merged or ci:daily GH label to it.
• Make sure this PR contains one of the labels below.

["cleanup", "BREAKING CHANGE", "feature request", "bug", "documentation", "maintenance", "dependencies", "other"]

[valentinpalkovic]

Hey @tobiasdiez, Thank you for your contribution!

Might you take a look at the linting error?

storybook/code/lib/core-server/src/build-dev.ts
  33:26  error  Replace `,·address:·string,` with `;·address:·string;`  prettier/prettier

[tobiasdiez]

@valentinpalkovic Sure, the linter should be happy now!