feat: Add email notifications for event registration confirmation to users #327

Job	Run time
Security & Code Quality	1m 24s
Test Suite	41s
Build & Performance	4m 52s
Database Tests	1m 7s
Enhanced Security Testing	5m 14s
Deploy to Production	0s
Deploy to Staging	0s
Performance Monitoring	0s
Performance Monitoring (Staging)	0s
Rollback on Failure	0s
	13m 18s

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