message: Add name and description to unit model
  Add course transform for ObjectId
diff: @@ -19,6 +19,12 @@ const unitSchema = new mongoose.Schema({
  },
  weight: {
  type: Number
  + },
  + name: {
  + type: String
  + },
  + description: {
  + type: String
  }
  },
  {
  @@ -28,6 +34,7 @@ const unitSchema = new mongoose.Schema({
  toObject: {
  transform: function (doc: any, ret: any) {
  ret._id = ret._id.toString();
  + ret._course = ret._course.toString();
  }
  },
  }
  