feat(scraper): add optimized URL scoring system

Implements a new high-performance URL scoring system with multiple scoring strategies:
- FastKeywordRelevanceScorer for keyword matching
- FastPathDepthScorer for URL depth analysis
- FastContentTypeScorer for file type scoring
- FastFreshnessScorer for date-based scoring
- FastDomainAuthorityScorer for domain reputation
- FastCompositeScorer for combining multiple scorers

Key improvements:
- Memory optimization using __slots__
- LRU caching for expensive operations
- Optimized string operations
- Pre-computed scoring tables
- Fast path optimizations for common cases
- Reduced object allocation

Includes comprehensive benchmarking and testing utilities.

crawl4ai/scraper/filters_review.py

@@ -761,7 +761,6 @@ def run_performance_test():
     print(f"Original Domain Filter: {sys.getsizeof(domain_filter):,} bytes")
     print(f"Optimized Domain Filter: {sys.getsizeof(fast_domain_filter):,} bytes")
 
-
 def test_pattern_filter():
     import time
     from itertools import chain