[#3] Added generate proto script create container method

Signed-off-by: Ilyas Niyazov <i.niyazov@yadro.com>

frostfs_sdk/models/mappers/selector_mapper.py

@@ -0,0 +1,73 @@
+from typing import List, Optional
+
+from frostfs_sdk.models.dto.selector import Selector
+from frostfs_sdk.models.enums.selector_clause import SelectorClause
+from frostfs_sdk.protos.models.netmap import types_pb2 as types_pb2_netmap
+
+
+class SelectorMapper:
+    @staticmethod
+    def to_grpc_messages(selectors: List[Selector]) -> Optional[List[types_pb2_netmap.Selector]]:
+        if not selectors:
+            return None
+        return [SelectorMapper.to_grpc_message(selector) for selector in selectors]
+    
+    @staticmethod
+    def to_grpc_message(selector: Selector) -> Optional[types_pb2_netmap.Selector]:
+        """
+        Converts Selector DTO to gRPC message
+        
+        Args:
+            selector: Selector DTO object
+            
+        Returns:
+            gRPC Selector message
+        """
+        if not selector:
+            return None
+        
+        clause_grpc = types_pb2_netmap.Clause(selector.clause.value)
+        if clause_grpc is None:
+            raise ValueError(f"Unknown enum value: {selector.clause.name} for {types_pb2_netmap.Clause.__name__}")
+
+        
+        return types_pb2_netmap.Selector(
+            name=selector.name,
+            count=selector.count,
+            clause=clause_grpc,
+            attribute=selector.attribute,
+            filter=selector.filter
+        )
+
+    @staticmethod
+    def to_models(grpc_selectors: List[types_pb2_netmap.Selector]) -> Optional[List[Selector]]:
+        if not grpc_selectors:
+            return None
+        return [SelectorMapper.to_model(grpc_selector) for grpc_selector in grpc_selectors]
+    
+    @staticmethod
+    def to_model(selector_grpc: types_pb2_netmap.Selector) -> Optional[Selector]:
+        """
+        Converts gRPC message to Selector DTO
+        
+        Args:
+            selector_grpc: gRPC Selector message
+            
+        Returns:
+            Selector DTO object
+        """
+        if not selector_grpc or selector_grpc.ByteSize() == 0:
+            return None
+        
+        clause = SelectorClause.get(selector_grpc.clause)
+        if clause is None:
+            raise ValueError(f"Unknown enum value: {selector_grpc.clause} for {SelectorClause.__name__}")
+
+
+        return Selector(
+            name=selector_grpc.name,
+            count=selector_grpc.count,
+            clause=clause,
+            attribute=selector_grpc.attribute,
+            filter=selector_grpc.filter
+        )