demo for cefsharp wpf

20190619 增加WPF的控件截屏功能演示(增加全屏多层和控件单层的截取，调整接口)

20190614 增加Jaeger链路追踪演示(注意:手动放置jaeger-all-in-one.exe到运行目录下)

20190403 fix params[] args support

20190403 add callback params[] args support

20190403 add callback demo

20190403 add dynamic support, add F12 devtool

20190328 add wpf window cef view switch demo

20190328 add wpf page cef invoke demo

20190328 add wpf page navigate demo

20190327 refact CefViewHelper

20190327 support async js call

20190327 support anycpu

20190327 support shared libs

2019412 add multi layer grid switch demo