Optimize macOS packaging and release artifacts

[friedkiwi]

Summary

• switch configured CI and preset builds to Ninja
• build macOS as a universal arm64 and x86_64 app binary
• package the macOS app and LICENSE into a DMG and upload it from CI
• attach the macOS DMG to tagged GitHub releases alongside the Windows binary

Verification

• cmake -S . -B build-ninja-universal -G Ninja -DFETCHCONTENT_SOURCE_DIR_WXWIDGETS=/Users/friedkiwi/CLionProjects/CSV-Explorer/build/_deps/wxwidgets-src
• cmake --build build-ninja-universal --target csv_explorer
• lipo -archs build-ninja-universal/csv-explorer.app/Contents/MacOS/csv-explorer
• cmake --build build-ninja-universal --target package
• hdiutil attach -readonly -nobrowse -mountpoint /tmp/csv-explorer-dmg-mount build-ninja-universal/csv-explorer-0.3.0-macos-universal.dmg
• ls -la /tmp/csv-explorer-dmg-mount
• hdiutil detach /tmp/csv-explorer-dmg-mount