refactor(crawler): improve HTML handling and cleanup codebase

- Add HTML attribute preservation in GoogleSearchCrawler
- Fix lxml import references in utils.py
- Remove unused ssl_certificate.json
- Clean up imports and code organization in hub.py
- Update test case formatting and remove unused image search test

BREAKING CHANGE: Removed ssl_certificate.json file which might affect existing certificate validations

crawl4ai/hub.py

@@ -1,17 +1,13 @@
-import importlib
-import pkgutil
-from pathlib import Path
-import logging
+# crawl4ai/hub.py
+from abc import ABC, abstractmethod
 from typing import Dict, Type
+import logging
+import importlib
+from pathlib import Path
 import inspect
 
 logger = logging.getLogger(__name__)
 
-# crawl4ai/base.py
-from abc import ABC, abstractmethod
-from typing import Optional, Dict, Any
-import json
-import logging
 
 class BaseCrawler(ABC):
     def __init__(self):