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/bactext.c

@@ -138,8 +138,12 @@ INDTEXT_DATA bacnet_application_tag_names[] = { { BACNET_APPLICATION_TAG_NULL,
         "BACnetReadAccessSpecification" },
     { BACNET_APPLICATION_TAG_LIGHTING_COMMAND, "BACnetLightingCommand" },
     { BACNET_APPLICATION_TAG_HOST_N_PORT, "BACnetHostNPort" },
+    { BACNET_APPLICATION_TAG_XY_COLOR, "BACnetxyColor" },
+    { BACNET_APPLICATION_TAG_COLOR_COMMAND, "BACnetColorCommand" },
     { BACNET_APPLICATION_TAG_BDT_ENTRY, "BACnetBDTEntry" }, 
     { BACNET_APPLICATION_TAG_FDT_ENTRY, "BACnetFDTEntry" }, 
+    { BACNET_APPLICATION_TAG_ACTION_COMMAND, "BACnetActionCommand" },
+    { BACNET_APPLICATION_TAG_SCALE, "BACnetScale" },  
     { 0, NULL } };
 
 const char *bactext_application_tag_name(unsigned index)