[php] add trait names for use trait to inheritsFrom field

[AndreiDreyer]

use Trait in Php acts like interfaces that allow you to override methods or call the base method implemented in the trait. We simply add the trait name to the inheritsFrom field. It's also been tested, the use Trait call can be anywhere in the class definition but still acts like it was called at the top of the class definition.

trait TraitA {
  function traitFunc() {}
}

class Foo {
  use TraitA;
  function someFunc() {
    $this->traitFunc();
  }
}

(new Foo()).traitFunc();