refactor: move runtime capability access away from Global window and navigator

[jderochervlk]

Summary

• remove Global.window and Global.navigator from the public
  runtime access path
• add owner-module entrypoints such as History.current,
  Storage.local, Storage.session, Performance.current, Crypto.current, and worker/
  service-worker current accessors
• update runtime-facing tests to use the owner modules
  instead of Global.window and Global.navigator

Validation

• npm run build
• npm test

Related

• Refs Move runtime capability access away from Global window and navigator #241

[brnrdog]

I wonder if we should add a short comment just explaining this pattern for future ref

[jderochervlk]

I'm planning on updating the readme and contributor docs to cover this once we're ready to finish tidying things up.

[brnrdog]

Looks good