Logger: Add method getLevel()

refs #10567

library/Icinga/Application/Logger.php

@@ -136,6 +136,16 @@ class Logger
         return $this;
     }
 
+    /**
+     * Return the logging level being used
+     *
+     * @return  int
+     */
+    public function getLevel()
+    {
+        return $this->level;
+    }
+
     /**
      * Register the given message as config error
      *