Add GitHub Action for Slack Notification on PR Ready for Review

[barbaraperic]

Summary

This PR introduces a GitHub Action workflow that sends a notification to Slack when a pull request is marked as "Ready for Review".

Workflow Details

• Trigger: The workflow is triggered on the pull_request event, specifically when a PR transitions to the "ready_for_review" status.
• Slack Notification:
  • Uses the slackapi/slack-github-action to post to the specified Slack channel.
  • Includes the PR title, URL, and list of assigned reviewers (or a default message if none are assigned).
  • Notifies the Slack channel #uxit-code-reviews with the reviewer information to streamline the review process.

Additional Notes

• This action requires the SLACK_BOT_TOKEN to be stored as a GitHub secret.

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Name	Status	Preview	Comments	Updated (UTC)
filecoin-foundation-site	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 6, 2024 2:31pm

[mirhamasala]

@barbaraperic - Just nits! 🙌🏼