Add minimize & close button to PIP view

[gileli121]

          @Mystqr4 

Very strange bug
I was able to reproduce it.

Very interesting scenario.

Thank you.

Btw, do you want the feature to have minimize and close buttons here:

I am surprised that it was not requested yet.
I see it as quite useful.
I think that it should show the window on the taskbar here

BUT only when the PIP is minimized.
And I suggest to make it show like this:

So, if it is from PIP, it will show on the taskbar with the PIP icon.

If it is only crop (this is developed now - see #313 for more info), it will show this:

If you un-miminze it, the icon will disappear if the PIP is always-on-top (otherwise it will still show)

Let me know what you think.

Originally posted by @gileli121 in #314 (comment)