Added Optional Setting

  title:
    description: 'Title'
    required: false
    default: '[Code Review]'
  temperature:
    description: 'Model Temperature'
    required: false
    default: 0.5
  top-p:
    description: 'Model Top P'
    required: false
    default: 0.9
  home-directory:
    description: 'Home Directory In Your Project'
    required: false
    default: ''

title: Header of Review Comment
home-directory: If the changed file is not in the home directory, it is not reviewed.