Cropping can be challenging

[bruno-garcia]

The new screenshot and cropping is live on NuGet Trends

I found that when using it, it felt challenging to grab the right part of the screen to start cropping:

trimming.mov

It seems like if it's within the screenshot area, it works. But if I'm right on it or slightly off, it doesn't.

Suggestions:

1. Change cursor when over the the area that allows starting to crop
2. Allow starting to crop from a radius of the corner. So that even outside of it a bit works out (and cursor would indicate it)