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## Description
Added: Hide the contents of the app, when is it in the background - Both
android and ios
In android, it shows a blank white/black background, when in background
In iOS, it shows the launch icon, when in background

Android Physical Device

Android stimulator
Also, compared the bitwarden apps in android, the flow is same
iOS Device: Need to verify
@ua741 @vishnukvmd Could you run on iOS devices and verify it?
Closes#47
## Type of Change
<!--- Put an `x` in all the boxes that apply: -->
- [ ] 🖼️ New icon
- [x] ✨ New feature (non-breaking change which adds functionality)
- [ ] 🛠️ Bug fix (non-breaking change which fixes an issue)
- [ ] ❌ Breaking change (fix or feature that would cause existing
functionality to change)
- [ ] 🧹 Code refactor
- [ ] ✅ Build configuration change
- [ ] 📝 Documentation
- [ ] 🗑️ Chore