Enqueue one task per root

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 49.14286% with 89 lines in your changes missing coverage. Please review.

Project coverage is 55.33%. Comparing base (1577567) to head (1aa77ad). Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
internal/app/subsystems/aio/store/sqlite/sqlite.go	67.24%	17 Missing and 2 partials :warning:
internal/app/coroutines/enqueueTasks.go	26.08%	17 Missing :warning:
...rnal/app/subsystems/aio/store/postgres/postgres.go	69.64%	15 Missing and 2 partials :warning:
pkg/task/record.go	0.00%	13 Missing :warning:
test/dst/dst.go	0.00%	13 Missing :warning:
internal/app/subsystems/aio/store/store.go	0.00%	7 Missing :warning:
internal/kernel/t_aio/store.go	0.00%	2 Missing :warning:
internal/app/coroutines/timeoutTasks.go	0.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #458 +/- ## ========================================== + Coverage 55.22% 55.33% +0.10% ========================================== Files 119 119 Lines 13753 13876 +123 ========================================== + Hits 7595 7678 +83 - Misses 5693 5730 +37 - Partials 465 468 +3 ```

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[avillega]

I think this is finally ready.