Added the gui library to add debug information

CMakeLists.txt

shader/fragment.frag

source/game/HeightMap.cpp

source/header/globalVar.hpp

source/helpers/glfw_setup.cpp

source/helpers/global_function.cpp

source/imgui/.github/CONTRIBUTING.md

source/imgui/.github/issue_template.md

source/imgui/.github/pull_request_template.md

source/imgui/.travis.yml

source/imgui/CHANGELOG.txt

source/imgui/LICENSE.txt

source/imgui/README.md

source/imgui/TODO.txt

source/imgui/examples/.gitignore

source/imgui/examples/README.txt

source/imgui/examples/allegro5_example/README.md

source/imgui/examples/allegro5_example/imgui_impl_a5.cpp

source/imgui/examples/allegro5_example/imgui_impl_a5.h

source/imgui/examples/allegro5_example/main.cpp