Modernize cmake project files

Fix install target

Update cmake-format config file

Format all cmake files.

Update CPM.cmake version.

Use FILE_SET HEADER to verify and install the header files.

Prevent build problems caused by CPM_USE_LOCAL_PACKAGES

Prevent problems with doctest if local found

cmake/AddUninstallTarget.cmake

@@ -0,0 +1,101 @@
+# SPDX-FileCopyrightText: 2012-2021 Istituto Italiano di Tecnologia (IIT) SPDX-FileCopyrightText:
+# 2008-2013 Kitware Inc. SPDX-License-Identifier: BSD-3-Clause
+
+#[=======================================================================[.rst:
+AddUninstallTarget
+------------------
+
+Add the "uninstall" target for your project::
+
+  include(AddUninstallTarget)
+
+
+will create a file ``cmake_uninstall.cmake`` in the build directory and add a
+custom target ``uninstall`` (or ``UNINSTALL`` on Visual Studio and Xcode) that
+will remove the files installed by your package (using
+``install_manifest.txt``).
+See also
+https://gitlab.kitware.com/cmake/community/wikis/FAQ#can-i-do-make-uninstall-with-cmake
+
+The :module:`AddUninstallTarget` module must be included in your main
+``CMakeLists.txt``. If included in a subdirectory it does nothing.
+This allows you to use it safely in your main ``CMakeLists.txt`` and include
+your project using ``add_subdirectory`` (for example when using it with
+:cmake:module:`FetchContent`).
+
+If the ``uninstall`` target already exists, the module does nothing.
+#]=======================================================================]
+
+# AddUninstallTarget works only when included in the main CMakeLists.txt
+if(NOT "${CMAKE_CURRENT_BINARY_DIR}" STREQUAL "${CMAKE_BINARY_DIR}")
+  return()
+endif()
+
+# The name of the target is uppercase in MSVC and Xcode (for coherence with the other standard
+# targets)
+if("${CMAKE_GENERATOR}" MATCHES "^(Visual Studio|Xcode)")
+  set(_uninstall "UNINSTALL")
+else()
+  set(_uninstall "uninstall")
+endif()
+
+# If target is already defined don't do anything
+if(TARGET ${_uninstall})
+  return()
+endif()
+
+set(_filename cmake_uninstall.cmake)
+
+file(
+  WRITE "${CMAKE_CURRENT_BINARY_DIR}/${_filename}"
+  "if(NOT EXISTS \"${CMAKE_CURRENT_BINARY_DIR}/install_manifest.txt\")
+  message(WARNING \"Cannot find install manifest: \\\"${CMAKE_CURRENT_BINARY_DIR}/install_manifest.txt\\\"\")
+  return()
+endif()
+
+file(READ \"${CMAKE_CURRENT_BINARY_DIR}/install_manifest.txt\" files)
+string(STRIP \"\${files}\" files)
+string(REGEX REPLACE \"\\n\" \";\" files \"\${files}\")
+list(REVERSE files)
+foreach(file \${files})
+  if(IS_SYMLINK \"\$ENV{DESTDIR}\${file}\" OR EXISTS \"\$ENV{DESTDIR}\${file}\")
+    message(STATUS \"Uninstalling: \$ENV{DESTDIR}\${file}\")
+    execute_process(
+      COMMAND \${CMAKE_COMMAND} -E remove \"\$ENV{DESTDIR}\${file}\"
+      OUTPUT_VARIABLE rm_out
+      RESULT_VARIABLE rm_retval)
+    if(NOT \"\${rm_retval}\" EQUAL 0)
+      message(FATAL_ERROR \"Problem when removing \\\"\$ENV{DESTDIR}\${file}\\\"\")
+    endif()
+  else()
+    message(STATUS \"Not-found: \$ENV{DESTDIR}\${file}\")
+  endif()
+endforeach(file)
+"
+)
+
+set(_desc "Uninstall the project...")
+if(CMAKE_GENERATOR STREQUAL "Unix Makefiles")
+  set(_comment
+      COMMAND
+      \$\(CMAKE_COMMAND\)
+      -E
+      cmake_echo_color
+      --switch=$\(COLOR\)
+      --cyan
+      "${_desc}"
+  )
+else()
+  set(_comment COMMENT "${_desc}")
+endif()
+add_custom_target(
+  ${_uninstall}
+  ${_comment}
+  COMMAND ${CMAKE_COMMAND} -P ${_filename}
+  USES_TERMINAL
+  BYPRODUCTS uninstall_byproduct
+  WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}"
+)
+set_property(SOURCE uninstall_byproduct PROPERTY SYMBOLIC 1)
+
+set_property(TARGET ${_uninstall} PROPERTY FOLDER "CMakePredefinedTargets")