examples/hwapi: Add hwconfig for console tracing of LED operations.

examples/hwapi/hwconfig_console.py

+# This is hwconfig for "emulation" for cases when there's no real hardware.
+# It just prints information to console.
+class LEDClass:
+
+    def __init__(self, id):
+        self.id = id
+
+    def value(self, v):
+        print("LED(%d):" % self.id, v)
+
+
+LED = LEDClass(1)
+LED2 = LEDClass(12)