Secure ReadProperty decoding and BACnetActionCommand (#702)

* Refactored and secured BACnetActionCommand codec into bacaction.c module for command object and added to bacapp module encode/decode with define for enabling and pseudo application tag for internal use.

* Simplified bacapp_data_len() and moved into bacdcode module as bacnet_enclosed_data_len() function.

* Secured ReadProperty-REQUEST and -ACK decoding.

* Removed deprecated Keylist_Key() functions from usage.

* Removed pseudo application datatypes from bacapp_data_decode() which only uses primitive application tag encoded values.

* Defined INT_MAX when it is not already defined by compiler or libc.

* Deprecated bacapp_decode_application_data_len() and bacapp_decode_context_data_len() as they are no longer used in any code in the library.

* Added BACnetScale to bacapp module. Improved complex property value decoding. Refactored bacapp_decode_known_property() function.

* Refactored and improved the bacapp_snprintf() function for printing EPICS.

* Fixed Lighting Output WriteProperty to handle known property decoding.

src/bacnet/cov.c

@@ -208,7 +208,6 @@ int cov_notify_decode_service_request(
     BACNET_UNSIGNED_INTEGER decoded_value = 0;
     BACNET_OBJECT_TYPE decoded_type = OBJECT_NONE;
     uint32_t decoded_instance = 0;
-    BACNET_PROPERTY_ID property_identifier = PROP_ALL;
     BACNET_PROPERTY_VALUE *value = NULL;
 
     /* subscriber-process-identifier [0] Unsigned32 */
@@ -292,8 +291,7 @@ int cov_notify_decode_service_request(
             /* this len function needs to start at the opening tag
                to match opening/closing tags like a stack.
                However, it returns the len between the tags. */
-            value_len = bacapp_data_len(&apdu[len], apdu_size - len,
-                (BACNET_PROPERTY_ID)property_identifier);
+            value_len = bacnet_enclosed_data_length(&apdu[len], apdu_size - len);
             len += value_len;
             /* add the opening tag length to the totals */
             len += tag_len;