Merge pull request DataDog#17 from github/attamusc/feat/add-fr-docs

feat: Add initial FR docs

Author: Attamusc

docs/first-responder.md

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+# First Responder
+
+First Responders are expected to be available during their own working hours, for one work week (no weekends).
+
+## Why have a First Responder?
+
+- Facilitate ability for non-responders to focus more deeply while one team member responds to synchronous and/or urgent tasks.
+- Reduce context shifting among non-responders.
+- Ensure our stakeholders and partners have an engineer available to engage with them.
+- Be a learning and growth opportunity for team members, to gain exposure to more of our areas of responsibility.
+- The first responder may also be pinged through PagerDuty if a high severity issue related to an AOR the team owns arises. **Note: Very few areas we own have SLOs that trigger an alert, so these will mostly likely be manual triggers from someone.**
+
+## How to First Responder
+
+### Beginning of week
+
+- [ ] Set the `#monolith-platform` Slack channel topic to `:first-responder: <your-handle>`.
+- [ ] **(optional)** Set your slack status emoji to `:first-reponder:` to call out that your on an FR rotation to others.
+- [ ] **(optional)** Enable slack notifications on the `#monolith-platform` channel.
+- [ ] Review our [owned services](https://catalog.githubapp.com/services?group=all&filterID=&filter=team.name%3Agithub%2Fmonolith-platform), [create Issues](https://github.com/github/monolith-platform/issues/new/choose) for any recurring problems you notice that aren't tracked.
+
+### Throughout the week
+
+- [ ] Help unblock teammates.
+- [ ] Be the first point of contact for [Pull Request](https://github.com/search?q=is%3Aopen+is%3Apr+team-review-requested%3Agithub%2Fmonolith-platform-reviewers+draft%3Afalse+-label%3Atriage&type=pullrequests) reviews.
+- [ ] Review `#monolith-platform` for notifications throughout each day.
+    - [ ] Triage new issues that pop up in the [first responder board](https://github.com/orgs/github/projects/7910). **Note, this board is populated by the github/first-responder tooling.**
+    - [ ] Team pings can be reviewed in `monolith-platform-ops` using the `github/first-responder` tooling chatops (see `First Responder tooling` below)
+    - [ ] For questions, try to follow this workflow:
+        - [ ] If you know the answer, reply to the person asking the question.
+        - [ ] If you don't know the answer immediately, let the requester know that you're researching their problem, and will get back to them. Look through the Hub, documentation, relevant code, and/or ask in the team channel to try to find an answer. **Don't get too hung up on if you can't find an answer. This should be a good effort investigation to make progress, not to solve the ask wholesale.**
+    - [ ] If you're not sure of the answer after research, ask the requester to open an [issue in our repo](https://github.com/github/monolith-platform/issues/new).
+  - [ ] For a request for work that comes in through Slack, ask the requester to open an [issue in our repo](https://github.com/github/monolith-platform/issues/new). 
+- [ ] Keep an eye on channels we help staff:
+    - [ ] `#monolith-platform`
+    - [ ] `#sorbet`
+    - [ ] `#dotcom-codespaces`
+- [ ] Check the [first responder board](https://github.com/orgs/github/projects/7910) for small, refined tasks to take on.
+- [ ] If things are quiet, contribute to normal Epic work. If unsure what to focus on, reach out to @attamusc.
+
+### First Responder tooling
+
+#### chatops
+
+| Action | Chatops command |
+| -------|-- |
+| View active notifications | `.fr new` or `.fr sup` |
+| Hide a notification from .fr new | `.fr hide <url>` |
+| Add an issue to .fr new | `.fr unhide <url>` |
+
+## End of Shift Report
+
+Add a comment to the [first responder roll-off discussion](https://github.com/github/monolith-platform/discussions/16), describing how the week went and highlight what you think is relevant for the next First Responder.
+
+