Add pagination to subscriptions

[dfarr]

No description provided.

[codecov]

Codecov Report

Merging #71 (cacda9b) into main (af6f469) will increase coverage by 0.00%.
The diff coverage is 91.66%.

@@           Coverage Diff           @@
##             main      #71   +/-   ##
=======================================
  Coverage   70.89%   70.90%           
=======================================
  Files          42       42           
  Lines        4247     4279   +32     
=======================================
+ Hits         3011     3034   +23     
- Misses       1019     1029   +10     
+ Partials      217      216    -1     

Files	Coverage Δ
internal/app/coroutines/readSubscriptions.go	85.45% <100.00%> (+4.50%)	⬆️
internal/app/coroutines/searchPromises.go	89.47% <100.00%> (ø)
internal/app/subsystems/aio/store/test/util.go	75.75% <ø> (ø)
internal/kernel/types/api_request.go	97.40% <100.00%> (+0.43%)	⬆️
internal/kernel/types/api_response.go	79.48% <100.00%> (+0.26%)	⬆️
internal/kernel/types/cursor.go	22.50% <100.00%> (+22.50%)	⬆️
pkg/subscription/record.go	76.92% <100.00%> (+1.92%)	⬆️
pkg/subscription/subscription.go	100.00% <ø> (ø)
test/dst/generator.go	100.00% <100.00%> (ø)
...rnal/app/subsystems/aio/store/postgres/postgres.go	68.33% <83.33%> (-2.00%)	⬇️
... and 2 more

... and 5 files with indirect coverage changes

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