Create an issue template to help guide people to the right resource

.github/ISSUE_TEMPLATE.md

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+**Note:** The issue tracker is only for tracking editorial and maintenance issues. Technical (protocol) issues need to be discussed on the official standards mailing list standards@xmpp.org (see more info here: https://mail.jabber.org/listinfo/standards/ ).
+
+**Examples of things which *do* belong here:**
+
+* Typographical issues in the XEPs (although a pull request would be more appreciated ;-))
+* Issues with the XEP build process, (partially) the editor workflow (such as sending emails)
+* Things which need to be done by an editor, e.g. applying council decisions, applying automatic deferrals, etc.
+
+**Examples of things which *do not* belong here, but instead on standards@:**
+
+* "XEP X is missing feature Y"
+* "The way X is done in protocol Y described in XEP Z is imperfect, we should be doing W instead"
+
+Unsure? stop by in xmpp:xsf@muc.xmpp.org?join and ask what’s appropriate. We won’t bite.
+
+**Now for your actual issue** Please delete this part of the template once you’ve read it.
+
+---
+
+* What is broken and where? e.g. Link to external resource XYZ is broken in XEP-2345 / What needs to be done? e.g. XEP-1234 needs to be Deprecated
+* If needed, please link the decision of the Approving Body