Support remembering files/folders for later comparison

[Dinesh0723]

Let us consider two different projects named Sample1 and Sample2, each containing Test1.txt and Test2.txt, respectively. Current Behavior (to compare):

1. Select Test1.txt in Sample1 and press cntl button.
2. Next, select Test2.txt in Sample2: In the right click context menu -> compare with-> Each other (it will open compare editor for comparison).

Expected Behavior:

1. Select Test1.txt in Sample1: In the right-click context menu -> "Select file for later comparison."
2. Next, select Test2.txt in Sample2: In the right-click context menu -> "Compare to Test1.txt."
3. Then it should open in compare editor for comparison.

I have seen this support in Beyond Compare and other IDEs.