Create 2 pane layout for large screen displays.

- 2 row layout for portrait mode
- 2 column layout for landscape mode
- Rotation not locked when wallet view is visible on portrait and
landscape modes
- Listen for screen size config changes for devices with multiple
screens like foldables
- Some minor refactorings to reuse components

Doc: go/foldables-power-menu
Bug: 171918213
Test: https://shortn.corp.google.com/_519oz70Ywr
Change-Id: Ia66f01db5bf0d9e37dbfc6e836beacf5dacc2ee0