add qt5 multimedia module
when compiling on a fresh new Ubuntu 24.04, following errors are shown:
-- FFMpeg >= 5 API : yes
-- Could NOT find Qt5Multimedia (missing: Qt5Multimedia_DIR)
CMake Warning at /usr/lib/x86_64-linux-gnu/cmake/Qt5/Qt5Config.cmake:39 (message):
Failed to find Qt5 component "Multimedia" config file at
"/usr/lib/x86_64-linux-gnu/cmake/Qt5Multimedia/Qt5MultimediaConfig.cmake"
Call Stack (most recent call first):
core/cmake/rules/RulesMediaPlayer.cmake:12 (find_package)
core/CMakeLists.txt:118 (include)
-- Could NOT find Qt5MultimediaWidgets (missing: Qt5MultimediaWidgets_DIR)
CMake Warning at /usr/lib/x86_64-linux-gnu/cmake/Qt5/Qt5Config.cmake:39 (message):
Failed to find Qt5 component "MultimediaWidgets" config file at
"/usr/lib/x86_64-linux-gnu/cmake/Qt5MultimediaWidgets/Qt5MultimediaWidgetsConfig.cmake"
Call Stack (most recent call first):
core/cmake/rules/RulesMediaPlayer.cmake:12 (find_package)
core/CMakeLists.txt:118 (include)