Add a reload gcode file function

[Wicked-Creations]

Is your feature request related to a problem? Please describe.
When iterating on a G-code file during development or testing, it becomes tedious and time-consuming to manually reload the last open file each time a change is made. This slows down the workflow and makes rapid iteration difficult.

Describe the solution you'd like
Please add an easy-to-access "Reload Last Open File" feature, ideally as both a visible button in the interface and as a keyboard shortcut (CTRL+R), allowing users to quickly reload the most recently opened G-code file with a single action.

Describe alternatives you've considered

• Manually re-opening the file each time via the current interface.
• Using other third-party tools or automation scripts to approximate this workflow, but they are not as integrated or user-friendly as a built-in hotkey and button.

Additional context
A reload feature with a keyboard shortcut like CTRL+R would save significant time for users who frequently edit and test G-code, and would be consistent with shortcut conventions in many applications. This small improvement would boost usability for users during development, troubleshooting, and repetitive testing cycles.

[EngineerGuy314]

I also desperately want this feature, and it seems that @Wicked-Creations implemented it in fix #401. Is there any way I can download an install package that includes this fix? Thanks.