provide blocking calls for mast allocator (#534)

Summary:
Pull Request resolved: #534

provide blocking and nonblocking calls for mast allocator

Reviewed By: vidhyav

Differential Revision: D78325728

fbshipit-source-id: 640205461ce5c742b2e086553aa6f3c9df49ee17

Author: James Sun

python/monarch/_src/actor/allocator.py

@@ -10,7 +10,7 @@
 import logging
 from typing import final, Optional
 
-from monarch._rust_bindings.monarch_hyperactor.alloc import (  # @manual=//monarch/monarch_extension:monarch_extension  # @manual=//monarch/monarch_extension:monarch_extension
+from monarch._rust_bindings.monarch_hyperactor.alloc import (  # @manual=//monarch/monarch_extension:monarch_extension
     Alloc,
     AllocSpec,
     LocalAllocatorBase,