CMakeLists Changes

[Float314]

Better error handling...

Changes -
In CMakeLists.txt, line 12-26 -

if (NOT dpp_FOUND)
    message(STATUS "DPP not found, fetching from GitHub...")
    FetchContent_Declare(
        dpp
        GIT_REPOSITORY https://github.com/brainboxdotcc/DPP.git
        GIT_TAG v10.1.4
    )
    FetchContent_MakeAvailable(dpp)

	if (NOT TARGET dpp::dpp AND TARGET dpp)
        add_library(dpp::dpp ALIAS dpp)
    endif()
else()
    message(STATUS "DPP is already there in ${dpp_DIR}. Skipping this step...") # changed this line
endif()

And in line 28-33 -

if (EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/src/config.json)
	file(COPY ${CMAKE_CURRENT_SOURCE_DIR}/src/config.json DESTINATION ${CMAKE_CURRENT_BINARY_DIR})
else()
	message(FATAL_ERROR "src/config.json NOT FOUND! Please place the folder in the src/ folder.") # Changed this line
endif()
file(COPY ${CMAKE_CURRENT_SOURCE_DIR}/src/res DESTINATION ${CMAKE_CURRENT_BINARY_DIR})

Thanks for reviewing! (I Like clean CMake...)