feat(build): Add Micronaut management and Micrometer dependencies for enhanced monitoring

Author: TheMeinerLP

backend/build.gradle.kts

@@ -12,6 +12,9 @@ dependencies {
     implementation(mn.micronaut.http.validation)
     implementation(mn.micronaut.runtime)
     implementation(mn.validation)
+    implementation(mn.micronaut.management)
+    implementation(mn.micronaut.micrometer.core)
+    implementation(mn.micronaut.micrometer.registry.prometheus)
     implementation(mn.micronaut.http.client.jdk)
     implementation(mn.micronaut.cache.caffeine)
     implementation(mn.micronaut.data.spring.jpa)