fix: prevent interface type array from causing runtime errors

[KEHyeon]

• Do only one thing
• Non breaking API changes
• [v] Tested

What did this pull request do?

fix: prevent interface type array from causing runtime errors
It has been modified to find out the value when it is an interface array.

User Case Description

type UserInterface interface {
	GetName() string
}

db.Table("users").Create([]UserInterface{UserToUserInterface(&userData)})

In this case, create is allowed.

[daheige]

lgtm

[KEHyeon]

thankyou

[a631807682]

Can you add some tests?

[KEHyeon]

Can you add some tests?

Can I just write test code?

[a631807682]

Can you add some tests?

Can I just write test code?

You can add unit tests to show what this PR fixes. https://github.com/go-gorm/gorm/blob/master/tests/create_test.go

[KEHyeon]

I guess I was wrong. If I change it one by one like this, the sideEffect seems to be too big. I thought of another way, so I'll upload the pr again.