rough refresh implementation and some cleanup with method names

modules/build/include/commands.hpp

@@ -4,6 +4,8 @@
 #include <dpmdk/include/CommonModuleAPI.hpp>
 #include <filesystem>
 #include "package_staging.hpp"
+#include <map>
+#include <sstream>
 
 /**
  * @brief Handler for the stage command

modules/build/include/metadata.hpp

@@ -32,7 +32,7 @@
  * @param package_dir Root directory of the package stage
  * @return true if contents manifest generation was successful, false otherwise
  */
-bool update_contents_manifest(const std::filesystem::path& package_dir);
+bool generate_contents_manifest(const std::filesystem::path& package_dir);
 
 /**
  * @brief Generates basic metadata files for a package stage