Feature/add bacnet binary lighting object (#522)

* Added Binary Lighting Output object example.

* Changed piface example app to support binary-lighting-output object type and blink warn

* Changed example device object to not create objects when device object-table is overridden

* Fixed unit testing for device object

src/bacnet/bactext.h

@@ -201,7 +201,16 @@ extern "C" {
         unsigned index);
 
     BACNET_STACK_EXPORT
-    bool bactext_bactext_lighting_operation_strtol(
+    bool bactext_lighting_operation_strtol(
+        const char *search_name, 
+        unsigned *found_index);
+
+    BACNET_STACK_EXPORT
+    const char *bactext_binary_lighting_pv_name(
+        unsigned index);
+
+    BACNET_STACK_EXPORT
+    bool bactext_binary_lighting_pv_names_strtol(
         const char *search_name, 
         unsigned *found_index);