build system and module refactoring + simple histogram scratch (#20)

* scratch adding histogram to image views

Histograms should come from some sort of histogram service. This is
currently just a POC.

* custom logger implementation w/o spdlog

* missing cmake file

* fix tests

* use operator<< over direct stream exposure

* rm print header

* add threading test + refactor towards interface libraries

omits the need for =target_include_directories= calls /everywhere/

* rm print header

* rm constexpr

* templated thread_pool

* fix doxyfile

* default enable doc building

* czi reader refactor

* rm erroneous include expression

* clang-format

* single lib include with PUBLIC visibility

* compile imgui stdlib

* clang format

* documentation update

centralize `LogLevelToString` to `ILog.hpp`

update docs and examples

lib/imaging/CMakeLists.txt

@@ -1,4 +1,4 @@
-include(${CMAKE_SOURCE_DIR}/cmake/libCZI.cmake)
+include(libCZI)
 
 find_package(OpenCV REQUIRED)
 
@@ -6,19 +6,19 @@ message(STATUS "Found opencv: " ${OpenCV_INCLUDE_DIRS})
 message(STATUS "OpenCV_LIBs from: " ${OpenCV_LIBS})
 
 set(IMAGELIBSRC
-  IPixelariumImage.hpp
+  include/IPixelariumImage.hpp
+  include/PixelariumImageFactory.hpp
+  impl/include/PixelariumJpg.hpp
+  impl/include/PixelariumPng.hpp
+  impl/include/PixelariumCzi.hpp
+  impl/include/PixelariumTiff.hpp
+  impl/include/PixelariumMem.hpp
   IPixelariumImage.cpp
-  PixelariumImageFactory.hpp
   PixelariumImageFactory.cpp
-  impl/PixelariumJpg.hpp
   impl/PixelariumJpg.cpp
-  impl/PixelariumPng.hpp
   impl/PixelariumPng.cpp
-  impl/PixelariumCzi.hpp
   impl/PixelariumCzi.cpp
-  impl/PixelariumTiff.hpp
   impl/PixelariumTiff.cpp
-  impl/PixelariumMem.hpp
   impl/PixelariumMem.cpp
 )
 
@@ -27,15 +27,19 @@ set(IMAGELIBLIBNAME pixelariumimagelib)
 add_library(${IMAGELIBLIBNAME}
   STATIC ${IMAGELIBSRC})
 
+add_library(pixelarium::lib::imaging_static ALIAS ${IMAGELIBLIBNAME})
+
 target_compile_definitions(${IMAGELIBLIBNAME} PUBLIC _LIBCZISTATICLIB)
 
 target_link_libraries(${IMAGELIBLIBNAME}
   PUBLIC ${OpenCV_LIBS}
-  PUBLIC pixelariumutilslib
+  PUBLIC pixelarium::lib::utilities_static
   PRIVATE libCZIStatic)
 
 
 target_include_directories(${IMAGELIBLIBNAME}
-  PRIVATE ${CMAKE_SOURCE_DIR}/lib
+  INTERFACE
+  PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include
+  PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/impl/include
   PUBLIC ${OpenCV_INCLUDE_DIRS}
   PUBLIC ${LIBCZI_INCLUDE_DIR})