Add a button to reload the current file #1657

For all's convenience, please use English to fill this issue.

Is your feature request related to a problem? Please describe.
QuickLook is extremely useful to quickly scan through log files, however due to the absence of a reload feature, the only way to update an actively updating file is to close the preview and open it again. For the currently selected file in Explorer, this might not seem so bad (press space twice), but for pinned previews, it's completely untenable.

Describe the solution you'd like
I am suggesting adding a Reload button at either of these two locations that will reload the current path without closing the window once upon clicking it. All window properties, like position, pin and stay-on-top status, should be preserved.

Bonus:
Once the manual reload button has been added, we could go a step further and add file-monitoring capabilities, to auto-reload when file contents change.

Describe alternatives you've considered
Closing and opening manually, however it is cumbersome.

I actually did an attempt to implement a file monitoring feature through a plugin, but then quickly found out that it's not really feasible (at least with my limited C# knowledge) because of the plugin interface being quite limited with the IViewer model.

Additional context
None