[nostalgia] Move modules into modules directory

src/nostalgia/modules/CMakeLists.txt

@@ -0,0 +1,43 @@
+# module dir list
+
+add_subdirectory(core)
+add_subdirectory(scene)
+
+
+# module libraries
+
+add_library(
+	NostalgiaKeelModules OBJECT
+		keelmodules.cpp
+)
+target_link_libraries(
+	NostalgiaKeelModules PUBLIC
+		Keel
+		NostalgiaCore
+		NostalgiaScene
+)
+if(NOT MSVC)
+	target_compile_options(NostalgiaKeelModules PRIVATE -Wsign-conversion)
+endif()
+install(
+	FILES
+		keelmodules.hpp
+	DESTINATION
+		include/nostalgia/appmodules
+)
+
+if(TURBINE_BUILD_TYPE STREQUAL "Native")
+	add_library(
+		NostalgiaStudioModules
+			studiomodules.cpp
+	)
+	target_link_libraries(
+		NostalgiaStudioModules PUBLIC
+			StudioAppLib
+			NostalgiaCore-Studio-ImGui
+			NostalgiaScene-Studio
+	)
+	if(NOT MSVC)
+		target_compile_options(NostalgiaStudioModules PRIVATE -Wsign-conversion)
+	endif()
+endif()