Feature/cleanup

[I-Dont-Remember]

What was changed?

• Added image of Slack deprecating the core functionality powering Workflow Buddy.
• Updated the Scheduled message step to be relative.
• Shifted docs into Wiki.
• Refactored the code for registering Slack Bolt listeners.

Why is this good for our users?

This is good because it cleans things up, makes things easier to read, and also lets them know about Slack deprecating core functionality.

Attestation

Below you'll find a checklist. For each item on the list, check one option and delete the other.

• Unit Tests
  • [x] Unit tests have been updated.
• Documentation
  • [x] Docs have been updated.
• Integration Testing
  • [x] At minimum, ran the ./test_workflows/workflow_buddy_end_to_end_test_read_only.slackworkflow workflow and it was both successfully completed & outputs looked correct (We don't have a way to assert that changes are correct yet).