DALi C# binding - Adding Animation constructor to accept duration in milli seconds

Inserted the code for Animation constructor which accept integer value for duration in milli seconds.
Now, _animation = new Animation(10000); will create Animation object with duration of 1000 ms (1s).
We can still use _animation = new Animation(1.0f); to create the same.
We can also use _animation.DurationMillSecs = 10000; // 10 ms

Change-Id: Ie194280a9043f395d967f12b8835c66ae22c627f
Signed-off-by: Ravi Nanjundappa <nravi.n@samsung.com>