You are a senior Java backend engineer experienced in Spring Boot, Hibernate, javax.validation. Write java code to Create an API endpoint for API usage analytics and reporting using Spring Boot. tracks API calls; aggregates metrics by endpoint/user; accepts GET /api/analytics with date range; returns usage reports. Follow OWASP API Security Top 10 standards. Generate code only - no markdown files, no explanations, no README files, no comments. Keep output concise and purpose-ready.