add evdev tools

tools/traceEvdev.py

@@ -0,0 +1,15 @@
+import evdev
+from evdev import InputDevice
+from select import select
+import time
+
+devices = map(evdev.InputDevice, (evdev.list_devices()))
+devices = {dev.fd: dev for dev in devices}
+
+while True:
+    r, w, x = select(devices, [], [])
+    if r != []:
+        for fd in r:
+            for event in devices[fd].read():
+                   print('Devicename:'+ devices[fd].name + '  Devicepath:' + devices[fd].fn + '  Events:' + str(devices[fd].active_keys(verbose=True)) + '  Value:' + str(event.value))
+