[MaterialDividerItemDecoration] Request: support GridLayoutManager too

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**Is your feature request related to a problem? Please describe.**
Currently it supports only one orientation, but not both. This is what's in code:

MaterialDividerItemDecoration divider =
new MaterialDividerItemDecoration(getContext(), orientation);
recyclerView.addItemDecoration(divider);

Not only that, but I think it draws outside the boundary. If you can, you can compare what you make with this solution:
https://github.com/Fondesa/RecyclerViewDivider

**Describe the solution you'd like**
Be able to set the divider to be shown on all orientations of the layoutManager, so that it will work for a grid, too.
Maybe even make it as such by default, because on the other solution I've mentioned it doesn't require it at all.

**Describe alternatives you've considered**
As I wrote, this works better:
https://github.com/Fondesa/RecyclerViewDivider

The usage there is as such:

recyclerView.addDivider()

**Additional context**
Relevant part in the sample:
https://github.com/material-components/material-components-android/tree/master/catalog/java/io/material/catalog/divider

Start with the MaterialDividerItemDecoration usage in the catalog sample and compare its current behavior with the linked RecyclerViewDivider solution. Verify the change supports both orientations with GridLayoutManager and keeps dividers within the layout boundary.

Written by the indexing model from the issue text.