MVS-721 store screening decision in fhir resource

[dmcook5208]

💾 [Code Check]

Make sure you've checked/done the following before making this PR!

• Does your code build/run?
• Does your design approach make sense?
• Does your work achieve the intention of the card?
• Does your code have any unintentional side effects -- have you tested a full workflow & checked the logic branches you touched?
• Did you make a unit test for your code (as appropriate)?
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🐬 [JIRA Sprint Card]

https://mass-immunization-system.atlassian.net/browse/MVS-721

📰 [Work Description]

Updated the POD app to utilize intermediate statuses of the Encounter status field to store the healthcare practitioner's screening decision if/as the patient moves from one station to the next (e.g. check-in to vaccination table).
The Encounter status is now set to:

• “in-progress” if the screener has decided to allow the patient to receive the vaccine
• "cancelled" if the screener has decided that the patient cannot receive the vaccine.
  Note: The status is still subsequently set to “finished” after submitting the immunization resource.

As part of these changes to finalize (fingers crossed) the station-style workflow, I also made a couple of related tweaks:

• automatically advance from the Check-in page to the consent & screening page upon checking in the patient
• automatically advance from the Consent & Screening page to the Vaccination Event page upon answering the "proceed with vaccination?" question

🚦 [Testing/QA Notes]

These changes need to be challenged with ad-hoc testing.
Recommendation: create at least 2 new patients, then simulate the station-style workflow as follows:

• retrieve patient 1
• check-in patient 1
• verify that the POD app automatically advances to the Consent & Screening page
• answer the "proceed with vaccination?" question for patient 1 (No)
• verify that the POD app automatically advances to the Vaccination Event page
• retrieve patient 2
• check-in patient 2
• verify that the POD app automatically advances to the Consent & Screening page
• answer the "proceed with vaccination?" question for patient 2 (Yes)
• retrieve patient 1
• verify that the POD app automatically advances to the Vaccination Event page.
• complete the Vaccination Event page and submit the vaccination record
• verify that the POD app automatically advances to the Discharge page
• retrieve patient 2
• verify that the POD app automatically advances to the Vaccination Event page.
• complete the Vaccination Event page and submit the vaccination record
• verify that the POD app automatically advances to the Discharge page