list-diff flag is not work when a recursive path (./...) is given

[Ericwww]

Hi, everyone.

I want to integrate goimports-reviser into our CI/CD to ensure that code gating will fail when the import ordering is not as expected.

But I found that list-diff flag is not work when a recursive path (./...) is given.

I am making a PR to fix this bug. But I have one question.

What is the right behavior when `list-diff` flag is given?
Refact code and print file path? or only print file path?

From what I remember, when you run the goimports -l command, it only prints the file path without refactoring the code.

I don't know what behavior is expected here for goimports-reviser.

[Ericwww]

Here is my PR #140

[incu6us]

Use v3.6.0 tag with the fix