iOS: fixed bug whereby some SDL testing apps weren't launching

Test apps in Xcode-iOS/Test/TestiPhoneOS.xcodeproj weren't launching
in the most-recent release of Xcode and the iOS Simulator (version 11.3.1).
This was caused by their shared Info.plist file not defining a
CFBundleShortVersionString (as reported by Xcode, when launching a test
app from within Xcode).

Xcode-iOS/Test/Info.plist

@@ -18,6 +18,8 @@
 	<string>${PRODUCT_NAME}</string>
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>