[#85] Pls let it work.

Signed-off-by: Tobias Frisch <tfrisch@uni-koblenz.de>

modules/gui/config/ImGui.cmake

 
 if (EXISTS "${vkcv_gui_lib_path}/imgui")
 	list(APPEND vkcv_imgui_sources ${vkcv_gui_lib_path}/imgui/backends/imgui_impl_glfw.cpp)
-	list(APPEND vkcv_imgui_sources ${vkcv_gui_lib_path}/imgui/backends/imgui_impl_vulkan.cpp )
+	list(APPEND vkcv_imgui_sources ${vkcv_gui_lib_path}/imgui/backends/imgui_impl_glfw.h)
+	list(APPEND vkcv_imgui_sources ${vkcv_gui_lib_path}/imgui/backends/imgui_impl_vulkan.cpp)
+	list(APPEND vkcv_imgui_sources ${vkcv_gui_lib_path}/imgui/backends/imgui_impl_vulkan.h)
+	list(APPEND vkcv_imgui_sources ${vkcv_gui_lib_path}/imgui/imconfig.h)
 	list(APPEND vkcv_imgui_sources ${vkcv_gui_lib_path}/imgui/imgui.cpp)
+	list(APPEND vkcv_imgui_sources ${vkcv_gui_lib_path}/imgui/imgui.h)
 	list(APPEND vkcv_imgui_sources ${vkcv_gui_lib_path}/imgui/imgui_draw.cpp)
 	list(APPEND vkcv_imgui_sources ${vkcv_gui_lib_path}/imgui/imgui_demo.cpp)
+	list(APPEND vkcv_imgui_sources ${vkcv_gui_lib_path}/imgui/imgui_internal.h)
 	list(APPEND vkcv_imgui_sources ${vkcv_gui_lib_path}/imgui/imgui_tables.cpp)
 	list(APPEND vkcv_imgui_sources ${vkcv_gui_lib_path}/imgui/imgui_widgets.cpp)
+	list(APPEND vkcv_imgui_sources ${vkcv_gui_lib_path}/imgui/imstb_rectpack.h)
+	list(APPEND vkcv_imgui_sources ${vkcv_gui_lib_path}/imgui/imstb_textedit.h)
+	list(APPEND vkcv_imgui_sources ${vkcv_gui_lib_path}/imgui/imstb_truetype.h)
 	
 	list(APPEND vkcv_imgui_includes ${vkcv_gui_lib}/imgui)
 	list(APPEND vkcv_imgui_includes ${vkcv_gui_lib}/imgui/backend)