[FEATURE] Custom Hook for password utility

[dylanesque]

When custom code needs to be more tightly integrated with hooks/state and is needed in multiple pages/components, drafting it as a custom hook is a best practice in React. This feature will create a folder for these, and implement a refactoring of @srsexton94's work on the password visibility toggle helper function into a solution that's more idiomatic to React, and will serve as a good example as to how to implement future custom hooks in the codebase.

[dylanesque]

Tabling this for now for reasons outlined in #87.