Adds SubscriptionRead and ISubscriptionBridge

[marceloschmidt]

Implemented here: RocketChat/Rocket.Chat#15549

[graywolf336]

Since we moved too slow on this and the definitions repo is no longer accessible, we need to move the definitions over to this pull request.

[CLAassistant]

All committers have signed the CLA.

[codecov]

Codecov Report

Attention: Patch coverage is 60.00000% with 6 lines in your changes missing coverage. Please review.

Project coverage is 55.04%. Comparing base (d3fe543) to head (b83acd8).
Report is 529 commits behind head on alpha.

Files with missing lines	Patch %	Lines
src/server/accessors/RoomSubscriptionRead.ts	33.33%	4 Missing ⚠️
src/server/compiler/AppCompiler.ts	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##            alpha      #43      +/-   ##
==========================================
+ Coverage   53.05%   55.04%   +1.99%     
==========================================
  Files          74       83       +9     
  Lines        2754     2885     +131     
  Branches      408      408              
==========================================
+ Hits         1461     1588     +127     
- Misses       1293     1297       +4     

Files with missing lines	Coverage Δ
src/server/accessors/Reader.ts	100.00% <100.00%> (ø)
src/server/accessors/index.ts	100.00% <100.00%> (ø)
src/server/bridges/AppBridges.ts	100.00% <ø> (ø)
src/server/bridges/index.ts	100.00% <ø> (ø)
src/server/managers/AppAccessorManager.ts	100.00% <100.00%> (ø)
src/server/compiler/AppCompiler.ts	26.03% <0.00%> (ø)
src/server/accessors/RoomSubscriptionRead.ts	33.33% <33.33%> (ø)

... and 6 files with indirect coverage changes

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Changes have been made.

[graywolf336]

subscription-testing_0.0.12.zip

Here is the app to run to test. It simply logs the subscription's of a room to the logger (aka don't do it on a big room otherwise the logs will be filled).