fix(migrate-template-gen): replace console logs with ora for async tasks

[abhi7cr]

Description of changes

Replace console logs with ora for async tasks in template gen flow.

Description of how you validated changes

Local testing

../amplify-cli/node_modules/.bin/migrate to-gen-2 revert --to amplify-testora-dev-8fb33 --from amplify-mygen2app-ora-sandbox-2681f0acba --debug
✔ Moved auth resources from Gen2 to Gen1 stack successfully
Moved resources back to Gen1 stack successfully.
✔ Moved your Gen1 backend files to amplify

Checklist

• PR description included
• yarn test passes
• Tests are changed or added
• Relevant documentation is changed or added (and PR referenced)
• New AWS SDK calls or CloudFormation actions have been added to relevant test and service IAM policies
• Pull request labels are added

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.