Resolve "add support for Experimental Pi PiBoy DMG"

Please make sure your MR is ready to be merged !

• You added the changes in CHANGELOG.md
• You described the MR as below
• You updated the recalbox wiki
• You wrote a blog post on recalbox-blog

Changes :

• describe changes here

Related to : recalbox#1817 (closed)

Closes #33 (closed)