AddMosaicKit (#12460)

Author: github-actions[bot]

packages.json

@@ -2977,6 +2977,7 @@
   "https://github.com/fcanas/FFCParserCombinator.git",
   "https://github.com/fcanas/hlscore.git",
   "https://github.com/fdebrabander/swift-ipaddress.git",
+  "https://github.com/fdenis75/MosaicKit.git",
   "https://github.com/fdiaz/SwiftInspector.git",
   "https://github.com/feixue299/FXPaddingLabel.git",
   "https://github.com/felilo/ALCoordinator.git",