COVID-19 Related Updates

[eedrummer]

This PR contains several changes to COVID-19 simulation in Synthea:

• Case rates per day are now based on national case rate per 100K per day
• Implementation of COVID-19 vaccination
• Vaccination rates and administration based off of national data
• Scripts to update case and vaccination data

[codecov]

Codecov Report

Merging #931 (86de12d) into master (6ed19ab) will increase coverage by 0%.
The diff coverage is 87%.

@@            Coverage Diff            @@
##             master    #931    +/-   ##
=========================================
  Coverage        81%     81%            
- Complexity     2817    3003   +186     
=========================================
  Files           107     113     +6     
  Lines         17064   17879   +815     
  Branches       2433    2622   +189     
=========================================
+ Hits          13838   14527   +689     
- Misses         2457    2563   +106     
- Partials        769     789    +20     

Impacted Files	Coverage Δ
...va/org/mitre/synthea/modules/covid/C19Vaccine.java	70% <70%> (ø)
...thea/modules/covid/C19VaccineAgeDistributions.java	86% <86%> (ø)
.../mitre/synthea/modules/covid/LateAdopterModel.java	87% <87%> (ø)
...e/synthea/modules/covid/C19ImmunizationModule.java	93% <93%> (ø)
src/main/java/org/mitre/synthea/engine/Module.java	81% <100%> (+<1%)	⬆️
...ain/java/org/mitre/synthea/helpers/Attributes.java	85% <100%> (+<1%)	⬆️
.../mitre/synthea/helpers/SyncedEnumeratedDistro.java	100% <100%> (ø)
...thea/world/agents/behaviors/PayerFinderRandom.java	85% <0%> (-15%)	⬇️
...n/java/org/mitre/synthea/world/concepts/Claim.java	87% <0%> (-7%)	⬇️
...c/main/java/org/mitre/synthea/export/FhirStu3.java	79% <0%> (-5%)	⬇️
... and 26 more

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