Improve security by enabling hardened runtime for macOS

This change also fixes a bug on recent versions of macOS where Minecraft mods that requested access to the microphone would silently fail.

.github/workflows/build.yml

@@ -143,6 +143,7 @@ jobs:
 
           cd ${{ env.INSTALL_DIR }}
           chmod +x "PolyMC.app/Contents/MacOS/polymc"
+          sudo codesign --sign - --deep --force --entitlements "../program_info/App.entitlements" --options runtime "PolyMC.app/Contents/MacOS/polymc"
           tar -czf ../PolyMC.tar.gz *
 
       - name: Package (Windows)

cmake/MacOSXBundleInfo.plist.in

@@ -2,6 +2,10 @@
 <!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
+	<key>NSCameraUsageDescription</key>
+	<string>A Minecraft mod wants to access your camera.</string>
+	<key>NSMicrophoneUsageDescription</key>
+	<string>A Minecraft mod wants to access your microphone.</string>
     <key>NSPrincipalClass</key>
     <string>NSApplication</string>
     <key>NSHighResolutionCapable</key>

program_info/App.entitlements

@@ -0,0 +1,12 @@
+<?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>com.apple.security.cs.disable-library-validation</key>
+	<true/>
+	<key>com.apple.security.device.audio-input</key>
+	<true/>
+	<key>com.apple.security.device.camera</key>
+	<true/>
+</dict>
+</plist>