Generate class codefix produces invalid code for top-level programs

[Youssef1313]

Version Used:

master

Steps to Reproduce:

using System;

var student = new Student("Youssef"); // Apply the codefix
Console.WriteLine(student.Name);

Expected Behavior:

using System;

var student = new Student("Youssef");
Console.WriteLine(student.Name);

internal class Student
{
    private string v;

    public Student(string v)
    {
        this.v = v;
    }
}

Actual Behavior:

using System;

var student = new Student("Youssef");

internal class Student
{
    private string v;

    public Student(string v)
    {
        this.v = v;
    }
}

Console.WriteLine(student.Name);

error CS8803: Top-level statements must precede namespace and type declarations.

Note that the class declaration must come after all top-level statements, but the codefix currently puts it in between statements.

This might not be specific to this codefix, but an issue in the code generation process that's used by more than one analyzer

[CyrusNajmabadi]

Would take a targeted community fix for this.