1.Support setting up the line height and additional kerning of label.
2.Add more annotation
add assert.
add test case for new API of Label.
Merge pull request #7046 from Dhilan007/v3-label-improve

1.Support setting up the line height and additional kerning of label.
[ci skip]
Modify the lua runtime template for prebuilt engine.
Merge pull request #7128 from natural-law/v3

Modify the lua runtime template for prebuilt engine.
Update the reference of submodule cocos2d-console.
Merge pull request #7132 from natural-law/v3

Update the reference of submodule cocos2d-console.