[v4] spine v3.8 (#20421)

* spine v3.8

add examples

* update template fiels

* update lua binding

* fix compile error

* rename spine/extension.h to spine/Extension.h

Author: PatriceJiang

cocos/CMakeLists.txt

@@ -49,7 +49,7 @@ include(audio/CMakeLists.txt)
 
 # default value for cocos2dx extensions modules build
 option(BUILD_EDITOR_COCOSTUDIO "Build editor support for cocostudio" ON)
-option(BUILD_EDITOR_SPINE "Build editor support for spine" OFF)
+option(BUILD_EDITOR_SPINE "Build editor support for spine" ON)
 option(BUILD_EXTENSIONS "Build extension library" ON)
 
 if(BUILD_EDITOR_COCOSTUDIO)
@@ -58,7 +58,11 @@ if(BUILD_EDITOR_COCOSTUDIO)
 endif(BUILD_EDITOR_COCOSTUDIO)
 
 if(BUILD_EDITOR_SPINE)
-    include(editor-support/spine/CMakeLists.txt)
+    if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/editor-support/spine/CMakeLists.txt")
+        include(editor-support/spine/CMakeLists.txt)
+    else()
+        message(WARNING "${CMAKE_CURRENT_SOURCE_DIR}/editor-support/spine/CMakeLists.txt not found!")
+    endif()
     set(COCOS_EDITOR_SUPPORT_SRC ${COCOS_EDITOR_SUPPORT_SRC} ${COCOS_SPINE_SRC} ${COCOS_SPINE_HEADER})
 endif(BUILD_EDITOR_SPINE)