create generic issue-bot workflow, add triaging job

.github/workflows/issue-bot.yml

@@ -0,0 +1,27 @@
+# **what?**
+# - respond to user comments by updating issues from `awaiting_response` to `triage`
+#
+# **why?**
+# - automate issue triage
+#
+# **when?**
+# - users comment on issues
+name: Issue bot
+
+on:
+    issue_comment:
+
+permissions:
+    issues: write
+
+jobs:
+    triage:
+        name: Update triage label
+        if: >-
+            contains(github.event.issue.labels.*.name, 'awaiting_response') &&
+            github.event == 'issue_comment'
+        uses: dbt-labs/actions/.github/workflows/swap-labels.yml@main
+        with:
+            add_label: triage
+            remove_label: awaiting_response
+        secrets: inherit