build: add the SIBO SDK

code/SIBOSDK/oopdemo/timer.cat

@@ -0,0 +1,30 @@
+IMAGE timer
+
+EXTERNAL olib
+EXTERNAL hwim
+
+INCLUDE hwimman.g
+
+CLASS   timerws   wserv
+window server active object
+    {
+    REPLACE ws_dyn_init
+    }
+
+CLASS   timerbw   bwin
+bordered window
+    {
+    REPLACE wn_init
+    }
+
+CLASS   mytimer   active
+timer active object
+    {
+    REPLACE ao_init
+    REPLACE ao_queue
+    REPLACE ao_run
+    PROPERTY
+        {
+        UWORD count;
+        }
+    }