2023 roadmap adopted in today's TPA meeting

Closes: tpo/tpa/team#40924

roadmap.md

@@ -4,6 +4,7 @@ We keep our plans for the future (and the paste) here.
 
 <!-- update with `ls -d roadmap/*.md | sed 's/.md$//;s/\(.*\)/ * [\1](\1)/'` -->
 
+ * [roadmap/2023](roadmap/2023)
  * [roadmap/2022](roadmap/2022)
  * [roadmap/2021](roadmap/2021)
  * [roadmap/2020](roadmap/2020)

roadmap/2023.md

+This page documents the mid-term plan for TPA in the year 2022.
+
+Previous [roadmaps](roadmap) were done in a quarterly and yearly basis, but
+in 2022, we used the [OKR](https://en.wikipedia.org/wiki/OKR) system instead. This was not done again
+this year and we have a simpler set of milestones we'll try to achieve
+during the year.
+
+Those are the big projects for 2023:
+
+ * do the bookworm upgrades, this includes:
+   * puppet server 7
+   * puppet agent 7
+   * plan would be:
+     * Q1-Q2: deploy new machines with bookworm
+     * Q1-Q4: upgrade existing machines to bookworm
+ * email services improvements (TPA-RFC-44 2nd generation)
+ * upgrade Schleuder and Mailman
+ * self-hosting Discourse?
+ * complete the cymru migration (e.g. execute TPA-RFC-40)
+ * retire gitolite/gitweb (e.g. execute TPA-RFC-36)
+ * retire SVN (e.g. execute TPA-RFC-11)
+ * monitoring system overhaul (TPA-RFC-33)
+ * deploy a Puppet CI
+
+The roadmap is still ambitious, possibly too much so, and like the
+OKRs, it's unlikely we complete them all. But we agree those are
+things we want to do in 2023, given time.