Build Workflow Update and Animations

[khanshoaib3]

Changes

• Updated build.gradle.kts (:app) to
  • fetch api keys from local.properties, fails to build if any api key is missing
  • fetch keystore information from keystore.properties, if not present, uses the default signing key as before, which is ~/.android/debug.keystore for debug build and null for release build
• Updated build.yml to generate local.properties and keystore.properties for proper signing. The workflow will now bundle the signed release build also with the artifact when manually called.
• Added simple slide in and out animation with a little bounciness.
• Updated the AppBottomBar to be placed as a floating action button to have proper bottom padding in different devices.
• Removed duplicate practice in MainAppScreen