Update _bPlaying on CCActionObject.

The method CCActionObject::isPlaying() return the state of the member var _bPlaying,
which is initially declared false and never updated. The change updates this variable
across the play, pause, stop and end states of the action.
use fileName for _actionDic key
SceneReader sets contentSize by canvasSize.

We could not get the canvas size of the scene which created on CocosStudio.

Thanks to this commit, we can get scene's canvas size by Node::getContentSize()

```cpp
auto scene = cocos2d::cocostudio::SceneReader::getInstance()->createNodeWithSceneFile("Scene.json");
int width = scene->getContentSize().width;
int height = scene->getContentSize().height;
cocos2d::log("canvasSize = %d, %d", width, height);
```
fix cmakelists.txt of linux platform
Merge branch 'v3' into fixLinuxCompileError
add box2d tinyzml back
fix linux compile error
Sprite3DTest.lua:
Add Sprite3DWithSkinTest
Add AttachmentTest
Add Sprite3DReskinTest
Add Sprite3DMirrorTest
Add Sprite3DHitTest
Finished Sprite3DHitTest
Sprite3DHitTest use BoundingBox
remove '../' at path on android.

because AAssetManager_open do not support '../' in path.
use reference
Scale9Sprite capInsets set fix
Remove string err no used
delete tip when reload file is empty(it's normal)
Merge branch 'v3' of https://github.com/cocos2d/cocos2d-x into v3
added  LuaStack::loadChunksFromZIP()
call detach method on thread exit
Merge pull request #8576 from cocoscodeide/v3

delete tip when reload file is empty(it's normal)