qt: fix bitcoin-qt app categorization on apple silicon

On master, the deployed bitcoin-qt application is categorized as an IOS application.
This is obviously incorrect, and the built executable is not an IOS executable.
To fix this, we set the CFBundleSupportedPlatforms key in our info.plist

share/qt/Info.plist.in

@@ -16,6 +16,11 @@
   <key>CFBundlePackageType</key>
   <string>APPL</string>
 
+  <key>CFBundleSupportedPlatforms</key>
+  <array>
+	   <string>MacOSX</string>
+  </array>
+
   <key>NSHumanReadableCopyright</key>
   <string>@CLIENT_VERSION_MAJOR@.@CLIENT_VERSION_MINOR@.@CLIENT_VERSION_BUILD@, Copyright © 2009-@COPYRIGHT_YEAR@ @COPYRIGHT_HOLDERS_FINAL@</string>