ctucx.git: sdm2mqtt

implement mqtt-auth

diff --git a/src/sdm2mqtt.nim b/src/sdm2mqtt.nim
@@ -1,6 +1,6 @@
 import std/[asyncdispatch, asyncnet]
 import std/[os, posix]
-import std/[tables, json]
+import std/[tables, json, options]
 import std/math
 import nmqtt
 

@@ -79,6 +79,11 @@ proc main () {.async.} =
 
   mqttContext = newMqttCtx("sdm2mqtt")
   mqttContext.set_host(config.mqtt.host, config.mqtt.port)
+  mqttContext.set_verbosity(1)
+
+  if (config.mqtt.username.isSome and config.mqtt.password.isSome):
+    mqttContext.set_auth(config.mqtt.username.get, config.mqtt.password.get)
+
   await mqttContext.start()
 
   asyncCheck updatePowermeters(config)