Notification module v3

It based on the Laravel Notification System (LNS) with some additional features:

1. make notifications preview-able (current implementation: examples to review on a panel)
2. opt-in/opt-out
3. message logs
4. frequency limit (current implementation is based on DB logs, we can use Redis Locks instead or alternatives)

Preview-able notifications

• Goals (domain reqs)
• Implementation high-level details

Opt-in/opt-out notifications

• Goals (domain reqs)
• Implementation high-level details

Message logs

• Goals (domain reqs)
• Implementation high-level details

Frequency limit

• Goals (domain reqs)
• Implementation high-level details