Rewrite plugin, use filenames in lockfile

fixtures/projects/ivy/basic/kotlin/build.gradle.kts

@@ -0,0 +1,20 @@
+plugins {
+    java
+}
+
+repositories {
+    ivy {
+        url = uri("https://asset.opendof.org")
+        patternLayout {
+            ivy("ivy2/[organisation]/[module]/[revision]/ivy(.[platform]).xml")
+            artifact("artifact/[organisation]/[module]/[revision](/[platform])(/[type]s)/[artifact]-[revision](-[classifier]).[ext]")
+
+        }
+    }
+}
+
+dependencies {
+    dependencies {
+        implementation("org.opendof.core-java:dof-cipher-sms4:1.0")
+    }
+}