Add file tools for v1 xml stores

scm-core/src/main/java/sonia/scm/update/PropertyFileAccess.java

@@ -0,0 +1,24 @@
+package sonia.scm.update;
+
+import java.io.IOException;
+import java.nio.file.Path;
+
+public interface PropertyFileAccess {
+  Target renameGlobalConfigurationFrom(String oldName);
+
+  interface Target {
+    void to(String newName) throws IOException;
+  }
+
+  StoreFileTools forStoreName(String name);
+
+  interface StoreFileTools {
+    void forStoreFiles(FileConsumer storeFileConsumer) throws IOException;
+
+    void moveAsRepositoryStore(Path storeFile, String repositoryId) throws IOException;
+  }
+
+  public interface FileConsumer {
+    void accept(Path file, String repositoryId) throws IOException;
+  }
+}