[feature]: Independent column resizing in timeline view for better readability

Is there an existing issue for this? • I have searched the existing issues Summary I have the self-hosted version of Plane available. As a Project Manager, I often need to turn to Plane's Timeline view to see what tasks I have scheduled for my team till what date. However, whenever I open the view, it does show me the task as a bar, but fails to let me expand the date slot by dragging it. Currently, long task titles are truncated because the timeline slots are too narrow. I try to do this because at times, the title of the work item is a little big, and it gets cut off. If I try to hold the bar, and drag it, it simply increases the time duration of the work item. This feels a little unintuitive, as I would ordinarily like to use it like I would do Excel cells - simply drag them to increase their length, and let me view more of what the title of the work item is. I would like a way to adjust the visual width of the timeline columns. Dragging the boundary of a date sho…