Add one more directory level in default merger type package name
Add one more directory level in default merger type package name

Summary:
Putting shapes with a default package name under `com.facebook.redex`.
This name avoids polluting the root directory for code size attrition analysis.

Reviewed By: zlern2k

Differential Revision: D10210688

fbshipit-source-id: 6bce9fbe85d3ea0fbaa3bbc9e1a985274dd8c673

facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex