Readded cmake-modules from https://github.com/bilke/cmake-modules.

.gitmodules

@@ -25,3 +25,6 @@
 [submodule "ThirdParty/SwmmInterface"]
 	path = ThirdParty/SwmmInterface
 	url = https://github.com/ufz/SwmmInterface.git
+[submodule "ThirdParty/cmake-modules"]
+	path = ThirdParty/cmake-modules
+	url = https://github.com/bilke/cmake-modules.git

cmake-modules @ af334f92

+Subproject commit af334f92548b7349a1bb038d56ce91fc7b3d3d00

scripts/cmake/CMakeSetup.cmake

 # Set additional CMake modules path
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH}
-  "${CMAKE_CURRENT_SOURCE_DIR}/scripts/cmake/cmake"
   "${CMAKE_CURRENT_SOURCE_DIR}/scripts/cmake"
   "${CMAKE_CURRENT_SOURCE_DIR}/ThirdParty/cmake-modules")