Factor out AppGLFW base class

The intention here is to get rid of scaffolding in the consumer
application class and allow to focus on the "important bits".

CMakeLists.txt

@@ -6,14 +6,12 @@ set(CMAKE_VERBOSE_MAKEFILE ON)
 set(CXX_STANDARD 20)
 set(CXX_STANDARD_REQUIRED true)
 
-set(imgui_DIR ${PROJECT_SOURCE_DIR}/modules/imgui)
 set(glfw_DIR ${PROJECT_SOURCE_DIR}/modules/glfw)
 set(pfd_DIR ${PROJECT_SOURCE_DIR}/modules/portable-file-dialogs)
 set(spdlog_DIR ${PROJECT_SOURCE_DIR}/modules/spdlog)
 
 find_package(OpenGL REQUIRED)
 
-message(STATUS "IMGUI:\t" ${imgui_DIR})
 message(STATUS "GLFW:\t" ${glfw_DIR})
 message(STATUS "PFD:\t\t" ${pfd_DIR})
 message(STATUS "SPDLOG:\t" ${spdlog_DIR})
@@ -38,17 +36,10 @@ add_subdirectory(src)
 add_subdirectory(lib)
 
 set(SRC
-  src/AppGLFW.cpp
+  src/MyApp.cpp
   src/views/PixelariumImageView.cpp
   src/viewmodels/ImageViewFactory.cpp
-  src/main.cpp
-  ${imgui_DIR}/imgui.cpp
-  ${imgui_DIR}/imgui_demo.cpp
-  ${imgui_DIR}/imgui_draw.cpp
-  ${imgui_DIR}/imgui_tables.cpp
-  ${imgui_DIR}/imgui_widgets.cpp
-  ${imgui_DIR}/backends/imgui_impl_opengl3.cpp
-  ${imgui_DIR}/backends/imgui_impl_glfw.cpp)
+  src/main.cpp)
 
 #====================
 # needed for the spdlogger implemntation
@@ -63,16 +54,15 @@ target_link_libraries(${PROJECT_NAME}
   PRIVATE pixelariumimagelib
   PRIVATE pixelariumrenderlib
   PRIVATE pixelariumutilslib
-  PRIVATE pixelariumresourcelib)
+  PRIVATE pixelariumresourcelib
+  PUBLIC pixelariumapplicationlib)
 
 target_include_directories(${PROJECT_NAME}
   PUBLIC ${PROJECT_SOURCE_DIR}/src
   PUBLIC ${PROJECT_SOURCE_DIR}/lib
   PUBLIC ${PROJECT_SOURCE_DIR}/lib/imaging
+  PUBLIC ${PROJECT_SOURCE_DIR}/lib/app
   PUBLIC ${spdlog_DIR}/include
-  PUBLIC ${imgui_DIR}
-  PUBLIC ${imgui_DIR}/backends
-  PUBLIC ${glfw_INCLUDE_DIR}
   PUBLIC ${pfd_DIR}
   PUBLIC ${LIBCZI_INCLUDE_DIR}
   PUBLIC ${CMAKE_CURRENT_BINARY_DIR})