feature: ability to check if line before return and branch is a real …

[Ak-Army]

If real-statement-check is true this linter expects an enter if there is a real statement in the previous line, but forbids an enter if there is only a statement closure.

Examples of incorrect code:

func fooa() int {
    o := []int{0, 1}
    return o[0]
}

func foob(s string) *a {
    o := &a{
       a: s,
    }
	
    return o
}

func fooc() int {
    defer bar()
    return 0
}

func fooe(s string) interface{} {
    o := foob(
        s,
    )
	
    return o
}

Examples of correct code:

func fooa() int {
    o := []int{0, 1}
	
    return o[0]
}

func foob(s string) *a {
    o := &a{
        a: s,
    }
    return o
}

func fooc() int {
    defer bar()
    
    return 0
}

func fooe(s string) interface{} {
    o := foob(
        s,
    )
    return o
}