Added mqtt output plugin.

Author: pantierra

README.md

@@ -58,13 +58,23 @@ sources:
       database: postgis
       username: username
       password: password
+
+# Outputs: Define where notifications are sent
+outputs:
+  - type: mqtt
+    config:
+      broker_host: localhost
+      broker_port: 1883
 ```
 
 ### Available Plugins
 
 #### Sources
 - `postgres`: Monitor PostgreSQL/pgSTAC database changes
 
+#### Outputs
+- `mqtt`: Publish events to MQTT broker
+
 ## Testing
 
 Install test dependencies and run tests with `uv`:

eoapi_notifier/outputs/__init__.py

@@ -0,0 +1,11 @@
+"""
+Outputs plugins.
+
+"""
+
+from .mqtt import MQTTAdapter, MQTTConfig
+
+__all__ = [
+    "MQTTAdapter",
+    "MQTTConfig",
+]