Update to SingleApplication 3.3.2 proper

CMakeLists.txt

...SingleApplication-3.3.0/.github/workflows/build-cmake.yml

third_party/SingleApplication-3.3.2/.github/FUNDING.yml

...party/SingleApplication-3.3.2/.github/workflows/build.yml

third_party/SingleApplication-3.3.2/.gitignore

third_party/SingleApplication-3.3.2/CHANGELOG.md

third_party/SingleApplication-3.3.2/CMakeLists.txt

third_party/SingleApplication-3.3.2/LICENSE

third_party/SingleApplication-3.3.2/README.md

third_party/SingleApplication-3.3.2/SingleApplication

third_party/SingleApplication-3.3.2/Windows.md

...rty/SingleApplication-3.3.2/examples/basic/CMakeLists.txt

third_party/SingleApplication-3.3.2/examples/basic/basic.pro

third_party/SingleApplication-3.3.2/examples/basic/main.cpp

...ingleApplication-3.3.2/examples/calculator/CMakeLists.txt

...ty/SingleApplication-3.3.2/examples/calculator/button.cpp

...arty/SingleApplication-3.3.2/examples/calculator/button.h

...ingleApplication-3.3.2/examples/calculator/calculator.cpp

.../SingleApplication-3.3.2/examples/calculator/calculator.h

...ingleApplication-3.3.2/examples/calculator/calculator.pro