Feature/refactor-apps-string-parsing (#1152)

* Added bacnet_str functions for parsing various numeric strings.

* Renamed BACnet string API to be clearer when no stdlib function exists.

* Fixed  incompatible types - from 'BACNET_UNSIGNED_INTEGER *' to 'unsigned long *'  warning

* Changed bacnet-str-to functions to use ERANGE for error detection.

* Refactored some apps to use common string parsing for BACnet data types.

* Refactor bacapp_parse_application_data to use bacnet_string_to_unsigned for better clarity

* Added strtol for BACnetEventType.

src/bacnet/bactext.h

@@ -242,6 +242,15 @@ const char *bactext_timer_transition_name(uint32_t index);
 BACNET_STACK_EXPORT
 const char *bactext_timer_state_name(uint32_t index);
 
+BACNET_STACK_EXPORT
+const char *bactext_boolean_value_name(uint32_t index);
+
+BACNET_STACK_EXPORT
+bool bactext_property_states_strtoul(
+    BACNET_PROPERTY_STATES object_property,
+    const char *search_name,
+    uint32_t *found_index);
+
 BACNET_STACK_EXPORT
 bool bactext_object_property_strtoul(
     BACNET_OBJECT_TYPE object_type,