sensapi: Define the SensEvents library in sensevts.idl.

Also import wtypes.idl.

include/sensevts.idl

@@ -16,8 +16,17 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */
 
+import "wtypes.idl";
 import "oaidl.idl";
 
+[
+  version(2.0),
+  uuid(d597deed-5b9f-11d1-8dd2-00aa004abd5e)
+]
+library SensEvents
+{
+    importlib("stdole2.tlb");
+
     typedef struct SENS_QOCINFO
     {
         DWORD dwSize;
@@ -114,3 +123,5 @@ interface ISensLogon2 : IDispatch
             [in] BSTR bstrUserName,
             [in] DWORD dwSessionId );
     }
+
+} /* library SensEvents */