feat: Add support for Android 4.1+ (API 16)

This change makes the app compatible with Android 4.1 (Jelly Bean) and later versions.

- Lowered minSdkVersion to 16 in app/build.gradle.
- Removed unsupported features from AndroidManifest.xml and layout files.
- Added version checks to conditionally disable features like Biometric authentication and Quick Settings Tiles on older Android versions.
- Ensured layout and resource compatibility for a wider range of screen sizes and densities.
- build: Remove git dependency from build script
- fix: Revert compileSdk and targetSdk to 35

app/build.gradle

@@ -11,14 +11,14 @@ def fileProviderAuthority = "${packageName}.fileprovider"
 def fileProviderAuthorityDebug = "${packageName}.debug.fileprovider"
 
 android {
-    compileSdk 33
+    compileSdk 35
 
     namespace packageName
 
     defaultConfig {
         applicationId "${packageName}"
         minSdkVersion 16
-        targetSdkVersion 33
+        targetSdkVersion 35
         versionCode 80
         versionName "3.4.1"
         multiDexEnabled true