add changelog reminder

.github/workflows/changelog-reminder.yml

@@ -0,0 +1,17 @@
+on: pull_request
+name: Changelog Reminder
+permissions:
+  pull-requests: write
+jobs:
+  remind:
+    name: Changelog Reminder
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@master
+    - name: Changelog Reminder
+      uses: netfoundry/action-changelog-reminder@main
+      with:
+        changelog_regex: CHANGELOG\.md
+        customPrMessage: Did you forget to update CHANGELOG.md?
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

CHANGELOG.md

@@ -5,6 +5,7 @@
 FIX: Correct the syntax for the Docker and Linux zrok-share "frontdoor" service that broke OAuth email address pattern matching
 
 CHANGE: log messages that said "backend proxy endpoint" were clarified to say "backend target"
+CHANGE: add changelog reminder bot
 
 ## v0.4.30