Change launcher/titlebar name to "Jellyfin Desktop"

For clarity

CMakeModules/NameConfiguration.cmake

@@ -1,5 +1,8 @@
 set(MAIN_TARGET JellyfinDesktop)
 
+# Display name (window title, application name)
+set(DISPLAY_NAME "Jellyfin Desktop")
+
 # Name of the output binary and data directories
 set(MAIN_NAME jellyfin-desktop)
 set(DATA_NAME jellyfin-desktop)
@@ -10,6 +13,6 @@ if(APPLE)
 elseif(WIN32)
   set(MAIN_NAME "Jellyfin Desktop")
   set(DATA_NAME "Jellyfin Desktop")
-endif(APPLE)
+endif()
 
-configure_file(src/shared/Names.cpp.in src/shared/Names.cpp @ONLY)
+configure_file(src/shared/Names.cpp.in src/shared/Names.cpp @ONLY)