adapt to pixi5

[wingcd]

1.adapt to pixi5
2.change to typescript

[Icemic]

Thank you for your kind!

However there're some steps to do:

1. please split your pull request to several ones, ensuring that each pr only contains one kind of change. And keep it stable (instead of pushing new commits steadily to master).
2. tell me why you change rollup to webpack? and how about the test?
3. please keep code style as origin
4. remove .vscode folder
5. use official pixijs type defination instead of copy yourself's
6. add more description to tell me what and how you did.
7. It's UNACCEPTABLE you remove the LICENSE file

Since it's quite a big change, it may cost quite a time to merge them.