Add dummy `Info.plist` to platform frameworks

A bug in the XCode 15.3 build system causes a dummy framework folder to
be included in the app bundle when it depends on a statically linked
framework (like this one). This causes app validation to fail both in
the simulator and when pushing an app build to the App Store Connect.

We work around the bug by adding a dummy `Info.plist` to the platform
frameworks, with a `MinimumOSVersion` that is wildly high to ensure it
can't actually be used.

Part of Electric-Coin-Company/zashi-ios#1166.

Makefile

@@ -54,6 +54,9 @@ products/%/frameworks/libzcashlc.framework: products/%/universal/libzcashlc.a
 	cp -R rust/target/Headers $@
 	mkdir $@/Modules
 	cp support/module.modulemap $@/Modules
+	# Workaround for a bug in the XCode 15.3 build system.
+	# https://github.com/Electric-Coin-Company/zashi-ios/issues/1166
+	cp support/platform-Info.plist $@/Info.plist
 
 products/macos/universal/libzcashlc.a: $(MACOS_ARCHS)
 	mkdir -p $(@D)

support/platform-Info.plist

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleExecutable</key>
+	<string>libzcashlc</string>
+	<key>CFBundleIdentifier</key>
+	<string>libzcashlc</string>
+	<key>CFBundleName</key>
+	<string>libzcashlc</string>
+	<key>CFBundlePackageType</key>
+	<string>BNDL</string>
+	<key>CFBundleVersion</key>
+	<string>0.7.5</string>
+	<key>CFBundleSupportedPlatforms</key>
+	<array>
+		<string>iphonesimulator</string>
+	</array>
+	<key>MinimumOSVersion</key>
+	<string>100.0</string>
+</dict>
+</plist>