feat(GlHoverLoadDirective): Implement GlHoverLoadDirective directive
What does this MR do?
This MR adds a directive that makes it easy for us to preload resources when a user hovers over an element.
This work is part of a bigger effort to refactor the repository blob viewers
Does this MR meet the acceptance criteria?
Conformity
Issue #1240 (closed)
Edited by Jacques Erasmus