Add triage sprint instructions page

Author: AThousandShips

index.rst

@@ -45,6 +45,7 @@ for your topic of interest. You can also use the search function in the top-left
    triage/workflow
    triage/guidelines
    triage/release_blockers
+   triage/sprint_instructions
 
 .. toctree::
    :hidden:

triage/sprint_instructions.rst

@@ -0,0 +1,56 @@
+.. _doc_bug_triage_sprint_instructions:
+
+.. note::
+
+    The bugsquad regularly hosts sprints where anyone can participate, this page contains instructions
+    for participating in these, sprints are organized in the
+    `#bugsquad-sprints <https://chat.godotengine.org/channel/bugsquad-sprints>`__ channel, subscribe
+    to get updates when new sprints are announced.
+
+    .. TODO: Add link to instructions for organizing sprints here once written.
+
+Participating in triage sprints
+===============================
+
+Each sprint discussion thread has a number of threads with batches of issues to test. To participate, please claim a
+batch by commenting on its thread (if it is free). Please don't start working on a batch without claiming it,
+even if you are unsure if you can finish all the issues in time, to avoid duplicating work. If you have finished a batch,
+and are interested in doing more and feel you have the time to complete one more, you can claim a second batch if there
+are any open batches. But please claim only **one** batch at a time.
+
+Please ask any questions or updates about issues relating to a batch in the thread of that batch.
+
+Sprint steps
+------------
+
+- Read through the issue conversation and see if there's some pending request, for example someone asking for an MRP or clarification.
+
+    - If there is, and the information is still missing, please comment with the issue report link in the batch thread and we will close it
+      due to inactivity. This might apply even if the thread has replies after the request if those replies do not provide the necessary information.
+      If you are unsure please comment in the batch thread and we will evaluate it.
+
+- Confirm that the report is filled in correctly, that all the necessary details are available.
+
+    - If something is missing, please comment on the issue asking for more information, or comment in the batch thread with the issue
+      report link and we will do it.
+
+- See if you recognize this issue from somewhere else, it might be a duplicate.
+
+    - If it is a duplicate, please comment on the issue linking to the (possible) duplicate, or comment in the batch thread.
+
+- Test the issue if you are able.
+
+    - If the issue is specific to some platform or hardware you do not have, comment with the issue report link in the sprint
+      discussion (**not** in the batch thread but the main sprint discussion), and create a thread under it, and someone else can
+      test it if they are able.
+    - Otherwise report the result of testing it on the issue itself, including what version(s) you tested it on and other details
+      such as OS, hardware, etc. This includes if you are unable to confirm the issue. If you are unsure if you followed the steps
+      correctly, or if they end up being unclear when you try to test the issue, please comment asking for clarification.
+
+If you need help updating any details on the issue, such as fixing the title, any tags or trackers, etc., please tag the person organizing the sprint
+in an issue comment, or ask in the batch thread.
+
+When you are done with the batch please comment in the batch thread. You can report the result of your triage as you go through them or at the end,
+but please make it clear when you are done so we can go through and check the issues, and know when the sprint is done.
+
+For more details on the general triage workflow, please see :ref:`doc_bug_triage_overview`.