Custom chat intro for LLMonFHIR depending on health record availability

[aalami5]

Problem

Currently the user gets a list of all the resources and it is difficult to go through and confusing. Would like to recommend a simpler UI.

Solution

Consider simple message when staring LLMonFHIR (if we have health data) with

"Hello "name" ask any question about your health information?"

if we don't have any health records available, we can start with,
"Looks like you have not downloaded any health data. Click the "Get Health Records" button below to connect with your health system and download your records."
The get health records button will take users to the "add account" page.

Additional context

No response

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