feat: rework CacheForPlayout as structured objects SOFIE-2663 SOFIE-2513

[Julusian]

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)

code improvement

• What is the current behavior? (You can also link to an open issue here)

The current CacheForPlayout is based around providing a mongo-like interface. This made it easy to introduce many releases back when we first added the caches.

• What is the new behavior (if this is a feature change)?

This reworks the cache to be a structure of objects, with various methods exposed for mutation.
This collects the various mutations that the code can do during playout into a set of classes. This will make it easier to test the code, and should aid developers in understanding the code.

• Other information:

This is inspired by the rewrite TV2DK are doing, but keeping the scope a lot smaller and more incremental.

This PR does not aim to give a perfect implementation of anything, but to be a bulky refactor which gets the general structure in place. It is intended that other portions of the code which call this model to be refactored/tidied up later on.

In the future I expect:

• The method naming and scope on the model will be refined
• Unit tests will be added
• any loose mongo calls will be moved to be done via the model
• the pattern will be replicated for ingest, with an IngestModel

Status

• Code documentation for the relevant parts in the code have been added/updated by the PR author
• The functionality has been tested by the PR author
• The functionality has been tested by NRK

[codecov]

Codecov Report

Attention: 847 lines in your changes are missing coverage. Please review.

Comparison is base (bcfeb99) 58.05% compared to head (cbc551a) 58.20%.
Report is 99 commits behind head on release51.

Additional details and impacted files

@@              Coverage Diff              @@
##           release51    #1035      +/-   ##
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+ Coverage      58.05%   58.20%   +0.15%     
=============================================
  Files            485      507      +22     
  Lines          78987    81414    +2427     
  Branches        4130     4279     +149     
=============================================
+ Hits           45855    47391    +1536     
- Misses         33077    33965     +888     
- Partials          55       58       +3     

Files	Coverage Δ
meteor/client/lib/data/util/object-to-xml.ts	82.35% <100.00%> (-11.77%)	⬇️
meteor/lib/Rundown.ts	81.28% <100.00%> (ø)
meteor/lib/api/client.ts	100.00% <100.00%> (ø)
meteor/lib/api/methods.ts	87.85% <100.00%> (ø)
meteor/lib/api/migration.ts	100.00% <100.00%> (ø)
meteor/lib/api/pieceContentStatus.ts	0.00% <ø> (ø)
meteor/lib/api/pubsub.ts	95.85% <100.00%> (+0.06%)	⬆️
meteor/lib/api/userActions.ts	100.00% <100.00%> (ø)
meteor/lib/lib.ts	77.04% <100.00%> (-0.98%)	⬇️
meteor/lib/logging.ts	84.90% <100.00%> (ø)
... and 87 more

... and 62 files with indirect coverage changes

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