infra: Add distribution files for macOS (#3934)

This upstream macOS packing and distribution files

distribution/macos/create_app_bundle.sh

@@ -0,0 +1,51 @@
+#!/bin/bash
+
+set -e
+
+PUBLISH_DIRECTORY=$1
+OUTPUT_DIRECTORY=$2
+ENTITLEMENTS_FILE_PATH=$3
+
+APP_BUNDLE_DIRECTORY=$OUTPUT_DIRECTORY/Ryujinx.app
+
+rm -rf $APP_BUNDLE_DIRECTORY
+mkdir -p $APP_BUNDLE_DIRECTORY/Contents
+mkdir $APP_BUNDLE_DIRECTORY/Contents/Frameworks
+mkdir $APP_BUNDLE_DIRECTORY/Contents/MacOS
+mkdir $APP_BUNDLE_DIRECTORY/Contents/Resources
+
+# Copy executables first
+cp $PUBLISH_DIRECTORY/Ryujinx.Ava $APP_BUNDLE_DIRECTORY/Contents/MacOS/Ryujinx
+chmod u+x $APP_BUNDLE_DIRECTORY/Contents/MacOS/Ryujinx
+
+# Then all libraries
+cp $PUBLISH_DIRECTORY/*.dylib $APP_BUNDLE_DIRECTORY/Contents/Frameworks
+
+# Then resources
+cp Info.plist $APP_BUNDLE_DIRECTORY/Contents
+cp Ryujinx.icns $APP_BUNDLE_DIRECTORY/Contents/Resources/Ryujinx.icns
+cp -r $PUBLISH_DIRECTORY/THIRDPARTY.md $APP_BUNDLE_DIRECTORY/Contents/Resources
+
+echo -n "APPL????" > $APP_BUNDLE_DIRECTORY/Contents/PkgInfo
+
+# Fixup libraries and executable
+python3 bundle_fix_up.py $APP_BUNDLE_DIRECTORY MacOS/Ryujinx
+
+# Now sign it
+if ! [ -x "$(command -v codesign)" ];
+then
+    if ! [ -x "$(command -v rcodesign)" ];
+    then
+        echo "Cannot find rcodesign on your system, please install rcodesign."
+        exit 1
+    fi
+
+    # NOTE: Currently require https://github.com/indygreg/apple-platform-rs/pull/44 to work on other OSes.
+    # cargo install --git "https://github.com/marysaka/apple-platform-rs" --branch "fix/adhoc-app-bundle" apple-codesign --bin "rcodesign"
+    echo "Usign rcodesign for ad-hoc signing"
+    rcodesign sign --entitlements-xml-path $ENTITLEMENTS_FILE_PATH $APP_BUNDLE_DIRECTORY
+else
+    echo "Usign codesign for ad-hoc signing"
+    codesign --entitlements $ENTITLEMENTS_FILE_PATH -f --deep -s - $APP_BUNDLE_DIRECTORY
+fi
+