move repositories to separate db package

replace jacoco with kover

db/build.gradle.kts

@@ -0,0 +1,16 @@
+plugins {
+    alias(libs.plugins.kotlin.jpa)
+}
+
+group = "com.github.dannecron.demo"
+version = "single-version"
+
+dependencies {
+    implementation(rootProject.libs.flyway.core)
+    implementation(rootProject.libs.postgres)
+    implementation(rootProject.libs.spring.boot.starter.jdbc)
+
+    testImplementation(libs.testcontainers)
+    testImplementation(libs.testcontainers.junit.jupiter)
+    testImplementation(libs.testcontainers.postgresql)
+}