widget/persistent_header_builder library

1. jskit package
2. documentation
3. widget/persistent_header_builder.dart

jskit package

1. Libraries
2. core
3. jskit
4. net/dio_interceptor
5. net/dio_util
6. net/js_request
7. tools/format
8. tools/func_utils
9. tools/tools
10. widget/after_layout
11. widget/animated_gradient_border
12. widget/common_blur
13. widget/custom_blur_app_bar
14. widget/keep_alive_wrapper
15. widget/persistent_header_builder
16. widget/turn_box
17. widget/vitrify