build: Rework CI and move all bundling into new build target. (#6556)

* build: Rework CI and move all bundling into new build target.

* ci: Use "mingw" in msys2 release names for compatibility.

* ci: Use "osx" in macOS release names for compatibility.

* ci: Disable macOS upload.

Will be moved to a separate PR for canary merge.

.ci/macos-universal.sh

@@ -0,0 +1,43 @@
+#!/bin/bash -ex
+
+ARTIFACTS_LIST=($ARTIFACTS)
+
+BUNDLE_DIR=build/bundle
+mkdir build
+
+# Set up the base artifact to combine into.
+BASE_ARTIFACT=${ARTIFACTS_LIST[0]}
+BASE_ARTIFACT_ARCH="${BASE_ARTIFACT##*-}"
+mv $BASE_ARTIFACT $BUNDLE_DIR
+
+# Executable binary paths that need to be combined.
+BIN_PATHS=(citra citra-room citra-qt.app/Contents/MacOS/citra-qt)
+
+# Dylib paths that need to be combined.
+IFS=$'\n'
+DYLIB_PATHS=($(cd $BUNDLE_DIR && find . -name '*.dylib'))
+unset IFS
+
+# Combine all of the executable binaries and dylibs.
+for OTHER_ARTIFACT in "${ARTIFACTS_LIST[@]:1}"; do
+    OTHER_ARTIFACT_ARCH="${OTHER_ARTIFACT##*-}"
+
+    for BIN_PATH in "${BIN_PATHS[@]}"; do
+        lipo -create -output $BUNDLE_DIR/$BIN_PATH $BUNDLE_DIR/$BIN_PATH $OTHER_ARTIFACT/$BIN_PATH
+    done
+
+    for DYLIB_PATH in "${DYLIB_PATHS[@]}"; do
+        # Only merge if the libraries do not have conflicting arches, otherwise it will fail.
+        DYLIB_INFO=`file $BUNDLE_DIR/$DYLIB_PATH`
+        OTHER_DYLIB_INFO=`file $OTHER_ARTIFACT/$DYLIB_PATH`
+        if ! [[ "$DYLIB_INFO" =~ "$OTHER_ARTIFACT_ARCH" ]] && ! [[ "$OTHER_DYLIB_INFO" =~ "$BASE_ARTIFACT_ARCH" ]]; then
+            lipo -create -output $BUNDLE_DIR/$DYLIB_PATH $BUNDLE_DIR/$DYLIB_PATH $OTHER_ARTIFACT/$DYLIB_PATH
+        fi
+    done
+done
+
+# Re-sign executables and bundles after combining.
+APP_PATHS=(citra citra-room citra-qt.app)
+for APP_PATH in "${APP_PATHS[@]}"; do
+    codesign --deep -fs - $BUNDLE_DIR/$APP_PATH
+done