Rename to "messaging systems", add pgmq-effectful

Author: Kleidukos

content/ecosystem/_index.md

@@ -33,7 +33,7 @@ content = "Time, Processes, Network"
 url = "/ecosystem/system"
 
 [[extra.list]]
-title = "Message Brokers"
-content = "Stream processing, messaging systems, message queues"
+title = "Messaging Systems"
+content = "Stream processing, message queues"
 url = "/ecosystem/messaging"
 +++

content/ecosystem/messaging.md

@@ -1,5 +1,5 @@
 +++
-title = "Message Brokers"
+title = "Messaging Systems"
 +++
 
 <dl>
@@ -11,3 +11,13 @@ title = "Message Brokers"
     </dt>
     <dd>Effectful effects for hw-kafka-client.</dd>
 </dl>
+
+<dl>
+    <dt>
+        <a href="https://github.com/shinzui/pgmq-hs"><code>shinzui/pgmq-effectful</code></a>
+        <a href="https://hackage.haskell.org/package/pgmq-effectful">
+            <img src="https://img.shields.io/hackage/v/pgmq-effectful.svg" alt="Hackage" data-canonical-src="https://img.shields.io/hackage/v/pgmq-effectful.svg" style="max-width: 100%;">
+        </a>
+    </dt>
+    <dd>Effectful effects for PGMQ (PostgreSQL Message Queue).</dd>
+</dl>