feature: allow to reconfigure azure params

## Description

It would be nice to add a command to re-run the `azure.json` config process (login/subscription/resource group...) without having to do `ng add` again or edit the config file manually.

## Type of change

Please delete options that are not relevant.

- [ ] Bug fix (non-breaking change which fixes an issue)
- [x] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
- [ ] This change requires a documentation update