Insert use statement for multiple classes at once

[hkdobrev]

This is an alternative to #32 which I hope is easier to implement.

When you can select multiple class names with multiple selections in Sublime and run the Find use command, I expect all classes I have selected to be found and used at the top.

When for some of them there are multiple choices I can be prompted one after the other with the name of the respective class.

[simplenotezy]

Would make me reinstall this, and not worry about phpstorm :)