RFC: Document Clippy's teams and team duties

I want to be clear: this is just the initial draft outlining what, I think, should be the responsibilities of the team members. It has not yet been discussed with anyone else.

book/src/SUMMARY.md

@@ -32,3 +32,4 @@
     - [Proposals](development/proposals/README.md)
         - [Roadmap 2021](development/proposals/roadmap-2021.md)
         - [Syntax Tree Patterns](development/proposals/syntax-tree-patterns.md)
+    - [The Team](development/the_team.md)

book/src/development/the_team.md

@@ -0,0 +1,112 @@
+# The team
+
+Everyone who contributes to Clippy makes the project what it is. Collaboration
+and discussions are the lifeblood of every open-source project. Clippy has a
+very flat hierarchy. The teams mainly have additional access rights to the repo.
+
+This document outlines the onboarding process, as well as duties, and access
+rights for members of a group.
+
+## Everyone
+
+Everyone, including you, is welcome to join discussions and contribute in other
+ways, like PRs.
+
+You also have some triage rights, using `@rustbot` to add labels and claim
+issues. See
+[labeling with @rustbot](https://forge.rust-lang.org/triagebot/labeling.html)
+
+A rule for everyone should be to keep a healthy work-life balance. Take a break
+when you need one.
+
+## Clippy-Contributors
+
+This is a group of regular contributors to Clippy to help with triaging.
+
+### Duties
+
+This team exists to make contributing easier for regular members. It doesn't
+carry any duties that need to be done. However, we want to encourage members of
+this group to help with triaging, which can include:
+
+1. **Labeling issues**
+
+    For the `good-first-issue` label, it can still be good to use `@rustbot` to
+    subscribe to the issue and help interested parties, if they post questions
+    in the comments. 
+
+2. **Closing duplicate or resolved issues**
+
+    When you manually close and issue, it's often a good idea, to add a short
+    comment explaining the reason.
+
+3. **Ping people after two weeks of inactivity**
+
+    We try to keep issue assignments and PRs fairly up-to-date. After two weeks,
+    it can be good to send a friendly ping to the delaying party.
+
+    You might close a PR with the `I-inactive-closed` label if the author is
+    busy or wants to abandon it. If the reviewer is busy, the PR can be
+    reassigned to someone else.
+
+    Checkout: https://triage.rust-lang.org/triage/rust-lang/rust-clippy to
+    monitor PRs.
+
+### Membership
+
+If you have been contributing to Clippy for some time, we'll probably ask you if
+you want to join this team. Members of this team are also welcome to suggest
+people who they think would make a great addition to this group.
+
+For this group, there is no direct onboarding process. You're welcome to just
+continue what you've been doing. If you like, you can ask for someone to mentor
+you, either in the Clippy stream on Zulip or privately via a PM.
+
+If you have been inactive in Clippy for over three months, we'll probably move
+you to the alumni group. You're always welcome to come back.
+
+## The Clippy Team
+
+[The Clippy team](https://www.rust-lang.org/governance/teams/dev-tools#Clippy%20team)
+is responsible for maintaining Clippy.
+
+### Duties
+
+1. **Respond to PRs in a timely manner**
+
+    It's totally fine, if you don't have the time for reviews right now.
+    You can reassign the PR to a random member by commenting `r? clippy`.
+
+2. **Take a break when you need one.**
+
+    You are valuable! Clippy wouldn't be what it is without you. So take a break
+    early and recharge some energy when you need to.
+
+3. **Sync Clippy with the rust-lang/rust repo**
+
+    This should be done roughly every two weeks. This is usually done by our
+    king @flip1995.
+
+4. **Update the changelog**
+
+    This needs to be done for every release, every six weeks. This is usually
+    done by @xFrednet.
+
+### Membership
+
+If you have been in the *Clippy-Contributors* team for some time, we'll probably
+reach out and ask if you want to help with reviews and eventually join the
+Clippy team.
+
+During the onboarding process, you'll have an active Clippy team member as a
+mentor, who assigns PRs to you. They will shadow your reviews, meaning that
+they'll keep an eye on your PRs, help you with any questions, and once you're
+done, perform a full review. When everything looks good, they'll r+ the PR in
+the name of both of you.
+
+When you've done several reviews and seem confident in the role, you'll be
+invited to join the team officially, as long as you're still interested. This
+onboarding phase typically takes a couple of weeks to a few months.
+
+If you have been inactive in Clippy for over three months, we'll probably move
+you to the alumni group. You're always welcome to come back.