Issue Title: Replace CORSFilter with WebMvcConfigurer for CORS configuration

[NWOM]

We currently have a CORS filter (CORSFilter) in our codebase to handle Cross-Origin Resource Sharing. However, there is a more modern and Spring-centric approach using WebMvcConfigurer. This issue aims to replace the existing CORSFilter with the WebMvcConfigurer-based configuration.

PROPOSED CHANGES
Replace the existing CORSFILTER.java class under config with the following configurtaion in DatabaseConfiguration.java

@Bean
public WebMvcConfigurer corsConfigurer() {
    return new WebMvcConfigurer() {
        @Override
        public void addCorsMappings(CorsRegistry registry) {
            registry.addMapping("/**")
                    .allowedOrigins("*")
                    .allowedMethods("*")
                    .allowedHeaders("*")
                    .allowCredentials(false).maxAge(3600);
        }
    };
}

This approach is more in line with modern Spring practices and provides a concise and effective way to handle CORS globally in our Spring Boot application and thereby reduces the boilerplate code