[Data Explorer] Replace/Rewrite HTML table in DocViewTable with Oui Component

[ananzh]

DocViewTable is using custom HTML table implementation with the standard HTML tags for defining tables, including <table>, <tbody> and <tr>. Should replace it with Oui component, like EuiDataGrid, EuiInMemoryTable or EuiBasicTable for consistent and maintenance purpose. Since our purpose is not for displaying tabular data and we don't need features like sorting, resizable column, full screen mode and don't have customized cell rendering, I think EuiDataGrid might be over-kill. I vote for EuiInMemoryTable or EuiBasicTable.