[NPU] Registering a new config option that will be used for enabling the new model serializer (#32303)

### Details:
- The new model serializer is being developed on [this
branch](#31939).
Registering only the config option in advance will allow us to merge the
compiler PR sooner since it has a dependency on it.

### Tickets:
 - *CVS-173711*

Author: razvanapetroaie

src/plugins/intel_npu/src/al/include/intel_npu/config/options.hpp

@@ -1411,4 +1411,18 @@ struct WS_COMPILE_CALL_NUMBER final : OptionBase<WS_COMPILE_CALL_NUMBER, uint32_
     }
 };
 
+struct USE_BASE_MODEL_SERIALIZER final : OptionBase<USE_BASE_MODEL_SERIALIZER, bool> {
+    static std::string_view key() {
+        return ov::intel_npu::use_base_model_serializer.name();
+    }
+
+    static bool defaultValue() {
+        return true;
+    }
+
+    static OptionMode mode() {
+        return OptionMode::CompileTime;
+    }
+};
+
 }  // namespace intel_npu

src/plugins/intel_npu/src/al/include/intel_npu/npu_private_properties.hpp

@@ -348,6 +348,21 @@ static constexpr ov::Property<WSVersion> separate_weights_version{"NPU_SEPARATE_
  */
 static constexpr ov::Property<bool> weightless_blob{"NPU_WEIGHTLESS_BLOB"};
 
+/**
+ * @brief [Only for NPU Plugin]
+ * Type: bool. Default is "true".
+ *
+ * This config option concerns the algorithm used for serializing the "ov::Model" at compilation time in order to be
+ * passed through the driver.
+ *
+ * The base serializer is the OV implementation of the "XmlSerializer" without any extensions. All weights are copied in
+ * a separate buffer. By turning this off, the NPU extension of the serializer is enabled. This allows optimizing the
+ * process by avoiding copies into a separate weights buffer. However, this solution may be less reliable.
+ *
+ * @note This option doesn't actually do anything right now, it has been registered in advance.
+ */
+static constexpr ov::Property<bool> use_base_model_serializer{"NPU_USE_BASE_MODEL_SERIALIZER"};
+
 /**
  * @brief [Experimental, only for NPU Plugin]
  * Type: integer.

src/plugins/intel_npu/src/plugin/src/plugin.cpp

@@ -298,6 +298,7 @@ void Plugin::init_options() {
     REGISTER_OPTION(WEIGHTLESS_BLOB);
     REGISTER_OPTION(SEPARATE_WEIGHTS_VERSION);
     REGISTER_OPTION(WS_COMPILE_CALL_NUMBER);
+    REGISTER_OPTION(USE_BASE_MODEL_SERIALIZER);
 
     if (_backend) {
         if (_backend->isCommandQueueExtSupported()) {

src/plugins/intel_npu/src/plugin/src/properties.cpp

@@ -382,6 +382,7 @@ void Properties::registerPluginProperties() {
     TRY_REGISTER_SIMPLE_PROPERTY(ov::workload_type, WORKLOAD_TYPE);
     TRY_REGISTER_SIMPLE_PROPERTY(ov::intel_npu::weightless_blob, WEIGHTLESS_BLOB);
     TRY_REGISTER_SIMPLE_PROPERTY(ov::intel_npu::separate_weights_version, SEPARATE_WEIGHTS_VERSION);
+    TRY_REGISTER_SIMPLE_PROPERTY(ov::intel_npu::use_base_model_serializer, USE_BASE_MODEL_SERIALIZER);
 
     TRY_REGISTER_CUSTOMFUNC_PROPERTY(ov::intel_npu::stepping, STEPPING, [&](const Config& config) {
         if (!config.has<STEPPING>()) {