app/src/main/res/drawable/add.xml

<vector
    android:height="24dp"
    android:tint="?android:textColorPrimary"
    android:viewportHeight="24"
    android:viewportWidth="24"
    android:width="24dp"
    xmlns:android="http://schemas.android.com/apk/res/android">

    <path
        android:fillColor="@android:color/white"
        android:pathData="M19,13h-6v6h-2v-6H5v-2h6V5h2v6h6v2z"/>
</vector>