feat(notice): delay notification sending to allow notification canceling

[gary02]

• delay notification sending by using bull queue
• add NotificationService.cancel method to cancel delayed notifications
• upgrade knex to latest version (3.1.0)
• isolate queues' namespace between different test files to avoid unit test failure

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 89.63415% with 17 lines in your changes missing coverage. Please review.

Project coverage is 58.74%. Comparing base (1eb9027) to head (073bdbc). Report is 3 commits behind head on develop.

Files	Patch %	Lines
src/connectors/queue/payTo/blockchain.ts	81.48%	5 Missing :warning:
src/connectors/queue/user.ts	77.27%	5 Missing :warning:
src/connectors/notificationService/index.ts	81.81%	4 Missing :warning:
db/initDatabase.js	93.75%	1 Missing :warning:
src/connectors/queue/publication.ts	87.50%	1 Missing :warning:
src/connectors/queue/utils.ts	96.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #4010 +/- ## =========================================== - Coverage 58.78% 58.74% -0.04% =========================================== Files 886 886 Lines 17181 17271 +90 Branches 3147 3170 +23 =========================================== + Hits 10099 10146 +47 - Misses 7031 7074 +43 Partials 51 51 ```

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