chore: add sample event data for local development

Add SQL script with sample event data to populate the database
during local development and testing.

- 15 sample events spanning 2025-2027
- Uses INSERT IGNORE to prevent duplicates on re-run

Author: devondragon

src/main/resources/data-local.sql

@@ -0,0 +1,20 @@
+-- Test data for local development
+-- Uses INSERT IGNORE to skip if data already exists
+
+INSERT IGNORE INTO events (id, name, description, location, date, time)
+VALUES
+    (1, 'Tech Conference 2025', 'A conference about the latest in tech.', 'San Francisco, CA', '2025-06-15', '10:00:00'),
+    (2, 'Spring Boot Workshop', 'Learn Spring Boot from experts.', 'New York, NY', '2025-07-10', '14:00:00'),
+    (3, 'AI Symposium', 'Exploring the advancements in AI.', 'Los Angeles, CA', '2026-08-22', '09:30:00'),
+    (4, 'DevOps Summit', 'Best practices for CI/CD pipelines, infrastructure as code, and cloud-native deployments.', 'Seattle, WA', '2026-03-18', '09:00:00'),
+    (5, 'Kubernetes Deep Dive', 'Hands-on workshop covering advanced Kubernetes patterns and operators.', 'Austin, TX', '2026-04-05', '13:00:00'),
+    (6, 'Java 25 Launch Party', 'Celebrating the release of Java 25 with demos and networking.', 'Denver, CO', '2026-05-12', '18:00:00'),
+    (7, 'Security in the Cloud', 'Zero-trust architecture, secrets management, and compliance automation.', 'Boston, MA', '2026-06-20', '10:30:00'),
+    (8, 'Microservices Architecture Forum', 'Patterns for building resilient distributed systems at scale.', 'Chicago, IL', '2026-07-08', '11:00:00'),
+    (9, 'Open Source Contributor Day', 'Learn how to contribute to popular open source projects with guided mentorship.', 'Portland, OR', '2026-09-14', '09:00:00'),
+    (10, 'Database Performance Tuning', 'Query optimization, indexing strategies, and monitoring for SQL and NoSQL databases.', 'Atlanta, GA', '2026-10-03', '14:00:00'),
+    (11, 'Frontend Frameworks Showdown', 'Comparing React, Vue, Angular, and Svelte with live coding demos.', 'Miami, FL', '2026-11-15', '10:00:00'),
+    (12, 'API Design Masterclass', 'RESTful best practices, GraphQL patterns, and API versioning strategies.', 'Philadelphia, PA', '2027-01-22', '13:30:00'),
+    (13, 'Machine Learning in Production', 'MLOps practices for deploying and monitoring ML models at scale.', 'San Diego, CA', '2027-02-28', '09:00:00'),
+    (14, 'Startup Tech Meetup', 'Networking event for tech founders and engineers building the next big thing.', 'Nashville, TN', '2027-03-10', '17:30:00'),
+    (15, 'Women in Tech Summit', 'Inspiring talks and workshops celebrating women in the technology industry.', 'Washington, DC', '2027-04-25', '08:30:00');