Add support for generic types expressed by selector expressions

[breml]

Add support for generic interfaces with selector expressions for the type, e.g.:

package foo

import (
	"bar"
)

type Fooer[T bar.Bar] interface {
	Foo() T
}

or

package foo

import (
	"bar"
)

type Fooer[T Bar] interface {
	Foo() T
}

where the destination file could be in the same or in a different package.

[breml]

Hi @hexdigest
I hope you don't mind me following up on this pull request. I contributed to gowrap in the past and I remember it being a swift experience. Based on the open issues and PR in this repo (as well as your recent Github contribution history) I wonder about the current state of maintenance of gowrap. Can you share you thoughts on this?

[hexdigest]

Hi @breml,

Excuse me for the delay, and than you for the contribution!
This fix should be in v1.3.5

[breml]

@hexdigest thank you for merging the PR, I am happy to help with this contribution.
No worry about the delay. Maintaining some open source myself as well, I do understand the tension this brings.
Thank you for maintaining gowrap ❤️ .