move sh script that grants the app WRITE_SECURE_SETTINGS to kotlin

[pixincreate]

if pm dump "$PACKAGE_NAME" | grep "$PERMISSION_NAME" | grep -q "granted=true"; then
    echo "Permission '$PERMISSION_NAME' is already granted to '$PACKAGE_NAME'."
else
    echo "Permission '$PERMISSION_NAME' not granted (or granted=false)."
    echo "Attempting to grant permission..."

    pm grant "$PACKAGE_NAME" "$PERMISSION_NAME"

    sleep 1
    echo "Verifying permission status after grant..."
    if pm dump package "$PACKAGE_NAME" | grep "$PERMISSION_NAME" | grep -q "granted=true"; then
        echo "Permission '$PERMISSION_NAME' successfully granted to '$PACKAGE_NAME'."
    else
        echo "Error: Failed to grant permission '$PERMISSION_NAME' to '$PACKAGE_NAME'."
        echo "Please check ADB output or device logs for errors."
    fi
fi

rewrite above shell script in kotlin just for the sake of convenience as it allows us to show a toast message and eventually log it stating the permission has been granted.

possibly, re-write the self service starter script just so that the functions can be re-used.

[pixincreate]

as a security measure, latest release has been removed.