[#3] Added generate proto script create container method

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

frostfs_sdk/models/dto/replica.py

@@ -0,0 +1,12 @@
+from dataclasses import dataclass, field
+
+
+EMPTY_STRING = ""
+
+@dataclass
+class Replica:
+    count: int
+    selector: str = field(default=EMPTY_STRING)
+
+    def __post_init__(self):
+        self.selector = self.selector if self.selector else EMPTY_STRING