If you want how to do it, see Description.
Can be applied to Nova Launcher from the app.
App was tested and exported after the latest run.
You must have the last version of Sketchware Pro.
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How to make an icon pack for launchers in Sketchware Pro.
add your icons inside res/drawable/ and rename them.
add res/xml/appfilter.xml and configure it
add res/xml/drawable.xml and configure it
Go to XML commands in the last version of Sketchware Pro, then, create the required 3 commands, i can't describe them because they are long, then go to AndroidManifest manager then app components and add this
<meta-data
android:name="com.google.android.theme.iconpack.metadata"
android:resource="@xml/appfilter" />