Upgrade Ionic 5 app to Ionic 6.

We have an Ionic 5 app. We need to upgrade it to latest Ionic 6 as well as latest Angular version. We need hands-on help to do the upgrade, and make everything work after the process. We prefer a clean upgrade, which will first create a blank Ionic 6 with latest Angular version and all dependencies, and migrate all the code from previous Ionic 5 app into the new one.