Add ability to view selected resource on the table panel

[everettraven]

While the table panel is great for viewing a smaller subset of information, it would be nice to provide the option to view the contents of a resource from the table with a simple key press. The information shown should be similar to that of the item panel.

Acceptance Criteria:

• Key press triggers a switch from the table view to a viewport with the selected table entry YAML
• Input to the table should be disabled and input should only affect the viewport
• Another key press (either the same key that triggered the view mode or a different key. Leaving as an implementation detail) should close the view mode and return to the table view