Webduror

[evanja57]

• added wasm ci for test_webduring_wasm.py that runs chrome, Firefox, and node
• made boxing.py, canning.py, and holding.py wasm import safe
• changed hio/base/__init__.py to make the imports wasm safe
  • use lazy importing so that modules are only loaded when they are directly called to avoid lmdb imported when running in wasm
• webduring.py ducktyped after during.py and modeled after the wasm compatible modules (webdber, webbaser) in keripy
• tests
• sortedcontainers package to setup.py for the wasm storage module