Annotation: Rectangles

Adding the missing annotation: rectangles.

A test case for the acid test will follow soon to replace some of the old annotation figures. For the moment try
```
figure1 = figure;
axes1 = axes('Parent',figure1);
annotation(figure1,'rectangle',...
      [0.358142857142857 0.757142857142858 0.0829285714285714 0.097619047619051],...
      'FaceColor',[0 0.498039215686275 0]);
```
to see the gain of this PR