refactor: turn StreamerMode into a singleton(-like thing) (#5216)

src/CMakeLists.txt

@@ -452,6 +452,8 @@ set(SOURCE_FILES
         singletons/Resources.hpp
         singletons/Settings.cpp
         singletons/Settings.hpp
+        singletons/StreamerMode.cpp
+        singletons/StreamerMode.hpp
         singletons/Theme.cpp
         singletons/Theme.hpp
         singletons/Toasts.cpp
@@ -505,8 +507,6 @@ set(SOURCE_FILES
         util/SplitCommand.hpp
         util/StreamLink.cpp
         util/StreamLink.hpp
-        util/StreamerMode.cpp
-        util/StreamerMode.hpp
         util/ThreadGuard.hpp
         util/Twitch.cpp
         util/Twitch.hpp
@@ -770,6 +770,7 @@ target_link_libraries(${LIBRARY_PROJECT}
         RapidJSON::RapidJSON
         LRUCache
         MagicEnum
+        $<$<BOOL:${WIN32}>:Wtsapi32>
         )
 if (CHATTERINO_PLUGINS)
     target_link_libraries(${LIBRARY_PROJECT} PUBLIC lua)