add sensor module that defines some basic sensor metadata

src/mqtt_dummy.gleam

@@ -1,9 +1,10 @@
 import gleam/erlang/process
 import gleam/list
 import gleam/otp/actor
+import sensors
 
 pub type Subscriber =
-  process.Subject(String)
+  process.Subject(sensors.SensorReading)
 
 pub type Message {
   Subscribe(subscriber: Subscriber)
@@ -24,7 +25,10 @@ fn handle_message(
     }
     Proc -> {
       list.each(subscribers, fn(subscriber) {
-        process.send(subscriber, "Hello from dummy mqtt action")
+        process.send(
+          subscriber,
+          sensors.SensorReading(sensors.Temperature, 26.6),
+        )
       })
       actor.continue(subscribers)
     }