feat: Update for Ionic 8/Angular 18/Capacitor 6 example tabs/photoviewer

[doughazell]

Is your feature request related to a problem? Please describe:

I had real problems combining https://github.com/jepiqueau/angular-photoviewer-app with "$ ionic start <project_name> tabs --type=angular --capacitor" so want to offer my repo to your instructions

Describe the solution you'd like:

Please use (if you want) https://github.com/doughazell/photoviewer

Describe alternatives you've considered:

Additional context:

[jcesarmobile]

There is a example app in the repository which uses Capacitor 7 and Angular 19

https://github.com/capacitor-community/photoviewer/tree/main/example