Issue 305 - Create Dark and Tinted Icons for the App

[rajhraval]

What it Does

• Closes #305
• The app supports dark mode and tinted app icons.

How I Tested

• Run the app after following the instructions in Contributing.md
• Go To Settings -> Change App Icon -> Pick an app icon
• Close the App -> Tap and Hold on the Home Screen -> Click on Edit and then on Customise
• Select Light To Test The Light Mode App Icon Variant
• Select Dark To Test the Dark Mode App Icon Variant
• Select Tinted to Test the Tinted App Icon Variant

Notes

• In the Change App Icon View, the icons are not visible, this is not correct as user doesn't how the app icon looks like before the user applies it.

Screenshot

https://github.com/user-attachments/assets/408942ce-4673-4779-808a-ae99f35d51e3