Implement ticket similarity detection and clustering

[samuelogboye]

Details:

• Create text similarity algorithm using embeddings
• Implement clustering for similar tickets
• Add duplicate ticket detection
• Create similar ticket recommendation system
• Build similarity scoring and ranking

Acceptance Criteria:

• Similarity algorithm finds related tickets accurately
• Clustering groups similar tickets automatically
• Duplicate detection prevents ticket repetition
• Similar ticket recommendations for each ticket
• Similarity scores ranked and explained