added support for pillars

some new helper methods/classes

sensors/radio/model/WiFiModelLogDistCeiling.h

@@ -18,6 +18,8 @@
  */
 class WiFiModelLogDistCeiling : public WiFiModel {
 
+	static constexpr const char* name = "WifiModelLDC";
+
 public:
 
 	/** parameters describing one AP to the model */
@@ -224,6 +226,8 @@ public:
 			ceilings.addCeiling(atHeight_m);
 		}
 
+		Log::add(name, "loaded " + std::to_string(accessPoints.size()) + " APs");
+
 	}
 
 };