[#3] Added generate proto script create container method

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

frostfs_sdk/models/enums/selector_clause.py

@@ -0,0 +1,14 @@
+from enum import Enum, unique
+
+@unique
+class SelectorClause(Enum):
+    CLAUSE_UNSPECIFIED = 0
+    SAME = 1
+    DISTINCT = 2
+
+    @classmethod
+    def get(cls, value: int):
+        try:
+            return cls(value)
+        except ValueError:
+            raise KeyError(f"Unknown enum value: {value}")