Refactor BiergartenDataGenerator to use dependency injection container

pipeline/includes/services/enrichment_service.h

@@ -0,0 +1,30 @@
+#ifndef BIERGARTEN_PIPELINE_SERVICES_ENRICHMENT_SERVICE_H_
+#define BIERGARTEN_PIPELINE_SERVICES_ENRICHMENT_SERVICE_H_
+
+/**
+ * @file services/enrichment_service.h
+ * @brief Abstraction for resolving contextual enrichment for a location.
+ */
+
+#include <string>
+
+#include "data_model/location.h"
+
+/**
+ * @brief Interface for services that can enrich a location with context.
+ */
+class IEnrichmentService {
+  public:
+   /// @brief Virtual destructor for polymorphic cleanup.
+   virtual ~IEnrichmentService() = default;
+
+   /**
+    * @brief Resolves contextual enrichment for a location.
+    *
+    * @param loc Location to enrich.
+    * @return Context text, or an empty string if unavailable.
+    */
+   virtual std::string GetLocationContext(const Location& loc) = 0;
+};
+
+#endif  // BIERGARTEN_PIPELINE_SERVICES_ENRICHMENT_SERVICE_H_