Get rid of oplog dependency

[make-github-pseudonymous-again]

By:

• Replacing Cursor#observeChanges calls with MongoDB change streams
• Disabling the oplog
• Caching Meteor subscription handles
• Using only async data fetching primitives

This is progress on:

• Try to exploit Change Streams instead of observe/observeChanges #999 (server-side only)
• Add unit tests for subscriptions #656 (partial)
• Warn when multiple tabs edit the same patient or consultation #276 (limited concurrent editing functionality)
• Fixes deathdate bugs #1018

Supersedes:

• Replace Cursor#observeChanges calls with MongoDB change streams #1003

[codecov]

Codecov Report

Attention: Patch coverage is 89.14382% with 194 lines in your changes missing coverage. Please review.

Project coverage is 70.81%. Comparing base (922e877) to head (aa8dff8).
Report is 137 commits behind head on main.

Files with missing lines	Patch %	Lines
imports/api/query/watch.ts	75.00%	20 Missing and 6 partials ⚠️
...s/ui/patients/PatientPersonalInformationStatic.tsx	48.78%	18 Missing and 3 partials ⚠️
imports/lib/async/lock.ts	45.45%	18 Missing ⚠️
imports/api/publication/useFind.ts	78.72%	10 Missing ⚠️
imports/api/createTagCollection.ts	25.00%	9 Missing ⚠️
...i/patients/usePatientPersonalInformationReducer.ts	55.00%	5 Missing and 4 partials ⚠️
imports/api/publication/stats/frequencyBySex.ts	86.66%	5 Missing and 3 partials ⚠️
imports/api/publication/subscribe.ts	79.48%	3 Missing and 5 partials ⚠️
imports/api/publication/subscriptionInternals.ts	53.33%	7 Missing ⚠️
imports/ui/merge/useMergeInfo.ts	0.00%	7 Missing ⚠️
... and 31 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1032      +/-   ##
==========================================
+ Coverage   66.27%   70.81%   +4.54%     
==========================================
  Files         719      763      +44     
  Lines       10006    11579    +1573     
  Branches     1349     1446      +97     
==========================================
+ Hits         6631     8200    +1569     
+ Misses       2915     2886      -29     
- Partials      460      493      +33     

Flag	Coverage Δ
client	52.27% <78.79%> (+6.42%)	⬆️
server	60.54% <50.03%> (-2.07%)	⬇️
test	77.10% <88.50%> (+4.56%)	⬆️
test-app	55.38% <67.97%> (+1.65%)	⬆️

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