How to open a folder?

[Rakly3]

How do I open a folder instead of an image?
The folder itself does not contain any images, but all the subdirectories (1000+) of this folder do.

I'd like to make this my default image viewer. The COM Surrogate processes in Windows 10 always bug my system out (probably because of the amount of images.)

Also, I know this is a bit of an odd request. A way to inverse the scroll direction. ie alt + scroll up = Previous image.
Add a toggle to switch it to Next image.

Instead of

  "MouseWheelActions": {
    "Scroll": "Zoom",
    "CtrlAndScroll": "PanVertically",
    "ShiftAndScroll": "PanHorizontally",
    "AltAndScroll": "BrowseImages"

Maybe something like this

  "MouseWheelActions": {
    "ScrollUp": "ZoomIn",
    "ScrollDown": "ZoomOut",
    "CtrlAndScrollUp": "PanVerticallyUp",
    "CtrlAndScrollDown": "PanVerticallyDown",
    "ShiftAndScrollUp": "PanHorizontallyRight",
    "ShiftAndScrollDown": "PanHorizontallyLeft",
    "AltAndScrollUp": "BrowseImagesNext"
    "AltAndScrollDown": "BrowseImagesPrevious"

And maybe even

    "CtrlAndAltAndScrollUp": "RotateImageRight"
    "CtrlAndAltAndScrollDown": "RotateImageLeft"

Thanks!