added spine submodule

.gitmodules

@@ -40,3 +40,6 @@
 [submodule "modules/curly.hpp"]
 	path = modules/curly.hpp
 	url = https://github.com/BlackMATov/curly.hpp
+[submodule "modules/spine"]
+	path = modules/spine
+	url = https://github.com/EsotericSoftware/spine-runtimes.git

CMakeLists.txt

@@ -171,6 +171,9 @@ set(glew-cmake_BUILD_MULTI_CONTEXT OFF CACHE INTERNAL "" FORCE)
 add_subdirectory(modules/glew)
 set_target_properties(libglew_static PROPERTIES FOLDER modules)
 
+add_subdirectory(modules/spine/spine-c)
+set_target_properties(spine-c PROPERTIES FOLDER modules)
+
 if(${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
     if(CMAKE_SIZEOF_VOID_P EQUAL 4)
         add_library(bass SHARED IMPORTED)
@@ -262,6 +265,7 @@ target_link_libraries(${PROJECT_NAME}
     PRIVATE bass
     PRIVATE glfw
     PRIVATE libglew_static
+    PRIVATE spine-c
     PRIVATE $<$<CXX_COMPILER_ID:MSVC>:winmm.lib>)
 
 target_include_directories(${PROJECT_NAME}