MSTEST0029 (Public method should be test method) false positive on public Dispose

[Youssef1313]

Having a TestClass that implements IDisposable and implement Dispose method implicitly will trigger MSTEST0029

	[TestClass]
	public class TestClass1 : IDisposable
	{
		[TestMethod]
		public void TestMethod1()
		{
		}

		public void Dispose() { }
	}

[Evangelink]

We should probably not report on any interface implementation.

Afaik people don't have test methods as part of interfaces so this should provide the best experience.