Create palletes sample for the column pinning topic

Create samples with custom palletes for the column pinning topic . Refer to column pinning samples in this repo and create samples. The samples should look like the ones in this PRs:
Grid: https://github.com/IgniteUI/igniteui-react-examples/pull/929
Hgrid and Tgrid: https://github.com/IgniteUI/igniteui-react-examples/pull/927