[FE] [Practice] Create a Cell using rw generator to display a user's balance

[cupOJoseph]

Goal

Learn about Cells in redwood docs and practice making some that can hold data

Deliverable

A component which can be used to show the user's balance. Include screenshots or a recording showing loading the users balance.

Suggested tasks

• Update the user model to include a balance. Use redwood standards to generate a user cell. Docs https://redwoodjs.com/docs/cells
• The loading and error states should be modified for good user-experience (we want to see your opinion here)
• The success state should show the user's balance in a proper format for currency
• Use the redwood storybook mocks to demonstrate it working https://redwoodjs.com/docs/mocking-graphql-requests#global-mock-requests-vs-local-mock-requests