Adds centralized type definitions for a general Coder auth implementation
Adds CoderTokenAuth implementation
Adds mockLocalStorage for testing
Notes
There is a React hook for bringing this class into React in a render-safe way, but for the first PRs, I'm focusing on the changes that I can plug into the existing codebase without changing/breaking any functionality or tests
Part 2 of breaking up the massive PR for #107
Changes made
CoderTokenAuth
implementationmockLocalStorage
for testingNotes