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/basic/object/command.h

@@ -12,6 +12,7 @@
 /* BACnet Stack defines - first */
 #include "bacnet/bacdef.h"
 /* BACnet Stack API */
+#include "bacnet/bacaction.h"
 #include "bacnet/rp.h"
 #include "bacnet/wp.h"
 
@@ -27,29 +28,6 @@
 extern "C" {
 #endif /* __cplusplus */
 
-    typedef struct bacnet_action_list {
-        BACNET_OBJECT_ID Device_Id;     /* Optional */
-        BACNET_OBJECT_ID Object_Id;
-        BACNET_PROPERTY_ID Property_Identifier;
-        uint32_t Property_Array_Index;  /* Conditional */
-        BACNET_APPLICATION_DATA_VALUE Value;
-        uint8_t Priority;       /* Conditional */
-        uint32_t Post_Delay;    /* Optional */
-        bool Quit_On_Failure;
-        bool Write_Successful;
-        struct bacnet_action_list *next;
-    } BACNET_ACTION_LIST;
-
-    int cl_encode_apdu(
-        uint8_t * apdu,
-        BACNET_ACTION_LIST * bcl);
-
-    int cl_decode_apdu(
-        uint8_t * apdu,
-        unsigned apdu_len,
-        BACNET_APPLICATION_TAG tag,
-        BACNET_ACTION_LIST * bcl);
-
     typedef struct command_descr {
         uint32_t Present_Value;
         bool In_Process;
@@ -144,6 +122,13 @@ extern "C" {
         uint32_t instance,
         float value);
 
+    BACNET_STACK_EXPORT
+    BACNET_ACTION_LIST * Command_Action_List_Entry(
+        uint32_t instance, unsigned index);
+    BACNET_STACK_EXPORT
+    unsigned Command_Action_List_Count(
+        uint32_t instance);
+
     /* note: header of Intrinsic_Reporting function is required
        even when INTRINSIC_REPORTING is not defined */
     BACNET_STACK_EXPORT