"use_design_system_item" lint should ignore import "hide" instructions

[KamilSztandur]

What's wrong: Leancode Lints throw a warning when you hide a class that has corresponding name to the banned class in one of use_design_system_item lints.

The unexpected result:

The expected result: I can hide this member without triggering the warning.

How to reproduce:

1. Setup leancode_lints for your project.
2. Add this to your analysis_options.yaml:

   custom_lint:
   rules:
   - use_design_system_item:
     AppBadge:
       - instead_of: Badge
         from_package: flutter

   3. Try to hide Badge class from material import:

      import 'package:flutter/material.dart' hide Badge;