Frontend: UUID Determination

[kennedyry]

On the frontend, we need to know what our User ID is to properly create entries and comments. Using Amplify, we should research how to best retrieve this information and use it.

Terms of Acceptance:

• Amplify Documentation read to determine how to best grab our UUID if we are authenticated.
• Functionality created to automatically determine this, or if not possible without backend calls work outlined for what is needed to accomplish this / incorporated into this ticket if possible.
• Frontend points mutated to where we would be using our own UUID in creating data to include that actual UUID instead of just stubbed ones. (Several areas in Timesheet functionality includes this).

[kennedyry]

@circlegov had mentioned that this can be grabbed from auth.currentAuthenticatedUser - may be useful exploring this for whoever picks this up.