Document Space ROS release process (#24)

Author: Bckempa

source/How-To-Guides.rst

@@ -16,3 +16,4 @@ They contain succinct steps to help you accomplish important tasks quickly.
    How-To-Guides/Use-VSCode-With-Docker
    How-To-Guides/Use-The-Dashboard
    How-To-Guides/Use-Simulation-Assets
+   How-To-Guides/Releasing-Space-ROS

source/How-To-Guides/Releasing-Space-ROS.rst

@@ -0,0 +1,32 @@
+Releasing Space ROS
+===================
+
+Before the release window
+-------------------------
+
+- Determine the release tag of the form rosdist-year.month.point, for example ``humble-2024.01.0``
+- Open a new issue with a title of the form "year-month Release", for example  "2024-01 Release"
+- Create a milestone that matches the release tag in each repo under the Space ROS organization
+- Create a new view in the Space ROS Project filtered by milestone
+
+During the release window
+-------------------------
+
+- Tag issues intended for the release with the correct milestone
+- Update issue status on the project view for the release
+
+At the end of the release window
+--------------------------------
+
+- Create release/distro branches on `docker`, `demos`, `simulation`, `docs`, and `process_sarif`.
+- Update the .repos files to the new versions for the new distro sync.
+- Re-run the tests, creating issues for any that failed.
+- Docker images are already built but only tagged `latest`, must tag release as release name.
+- Add announcements to Website, Docs, and Discourse
+- Create next release milestone and tracking issue
+
+After release window
+--------------------
+
+- Open issues based on release experience
+- Document lessons learned