Add gap attribute

[gmanolesi]

Can you please add the "gap" attribute to the Flexbox?

[arnosolo]

Yes, we need gap attribute

[ShortDevelopment]

This would be awesome

[github2136]

<com.google.android.flexbox.FlexboxLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:dividerDrawable="@drawable/sha_divider_media"
    app:flexWrap="wrap"
    app:showDivider="middle"/>

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="https://schemas.android.com/apk/res/android">
    <size
        android:width="20dp"
        android:height="20dp" />
</shape>

This allows you to put a fixed interval between each term