Handle correct transformation of @tracked property

[suchitadoshi1987]

Currently, the codemod completely replaces the classProperty node to a new node with @tracked due to which all other essential information regarding that classProperty is lost.

Eg:

import Component from "@ember/component";
import { computed, get } from "@ember/object";
import { alias } from "@ember/object/computed";

export default class Foo extends Component {
  bar;
  // baz class property
  baz = 'barBaz';

  @alias('model.isFoo')
  isFoo;

  @computed('baz', 'isFoo')
  get bazInfo() {
    return `Name: ${get(this, 'baz')}`;
  }
}

gets converted to

import { tracked } from "@glimmer/tracking";
import Component from "@ember/component";
import { computed, get } from "@ember/object";
import { alias } from "@ember/object/computed";

export default class Foo extends Component {
  bar;
  @tracked baz = "barBaz";

  @tracked isFoo;

  get bazInfo() {
    return `Name: ${get(this, "baz")}`;
  }
}

In the example above, the comment // baz class property got lost while it got converted. Also, the @alias got replaced by @tracked which is incorrect.
This PR solves both issues.