chore: Announce releases on Discord (#3839)

.github/workflows/announce-release-on-discord.yml

@@ -0,0 +1,25 @@
+name: Announce release on discord
+on:
+  release:
+    types: [published]
+
+jobs:
+  send_announcement:
+    runs-on: ubuntu-latest
+    steps:
+      - name: send custom message with args
+        env:
+          DISCORD_WEBHOOK: ${{ secrets.DISCORD_WEBHOOK }}
+          DISCORD_USERNAME: PlotSquared Release
+          DISCORD_AVATAR: https://raw.githubusercontent.com/IntellectualSites/Assets/main/plugins/PlotSquared/PlotSquared.png
+        uses: Ilshidur/action-discord@0.3.2
+        with:
+          args: |
+            "<@&525015541815967744> <@&679322738552471574> <@&699293353862496266>"
+            ""
+            "<:plotsquared:730750385886593039> **PlotSquared ${{ github.event.release.tag_name }} has been released!**"
+            ""
+            "Click here to view changelog: https://github.com/IntellectualSites/PlotSquared/releases/tag/${{ github.event.release.tag_name }}"
+            ""
+            "The download is available at:"
+            "- Spigot: <https://www.spigotmc.org/resources/77506/>"