Add geocoding to C++ pipeline

tooling/pipeline/includes/services/address/mock_address_service.h

@@ -0,0 +1,27 @@
+#ifndef BIERGARTEN_PIPELINE_INCLUDES_SERVICES_ADDRESS_MOCK_ADDRESS_SERVICE_H_
+#define BIERGARTEN_PIPELINE_INCLUDES_SERVICES_ADDRESS_MOCK_ADDRESS_SERVICE_H_
+
+/**
+ * @file services/address/mock_address_service.h
+ * @brief Deterministic IAddressService used when network geocoding is
+ * disabled.
+ */
+
+#include <optional>
+
+#include "services/address/address_service.h"
+
+/**
+ * @brief Address service that returns a fixed placeholder address for any
+ * coordinate pair, without making network calls.
+ */
+class MockAddressService final : public IAddressService {
+  public:
+   std::optional<AddressLookupResult> ReverseGeocode(
+       double /*longitude*/, double /*latitude*/) override {
+      return AddressLookupResult{.address_line1 = "123 Mock Street",
+                                 .postal_code = "00000"};
+   }
+};
+
+#endif  // BIERGARTEN_PIPELINE_INCLUDES_SERVICES_ADDRESS_MOCK_ADDRESS_SERVICE_H_