[AnVIL DX] Notify user if they need to create a Terra account

[MillenniumFalconMechanic]

Approach

• See mocks.
• Look in the authentication provider to check the hasTerraAccount status, or similar (confirm with @NoopDog).
• If the user has no Terra account, display "Complete your setup" instructions and the "Create a Terra account" radio option with description (mocks). The "Go to Terra" URL is already configured; it is the same as the Terra export URL.
• If the user has a Terra account, display the "Create a Terra account" has completed (mocks).
• The "Connect Terra to your NIH Account" option is out of scope for this ticket: do not display.