eng: add build-system config for package BNCH-112051 (#222)

Author: eli-bl

pyproject.toml

@@ -1,6 +1,10 @@
 # This fork of openapi-python-client is published internally at Benchling. Changes in this
 # project file will *not* be contributed upstream.
 
+[build-system]
+requires = ["poetry-core>=1.0.0"]
+build-backend = "poetry.core.masonry.api"
+
 [tool.poetry]
 name = "benchling-openapi-python-client"
 version = "2.0.0-alpha.1"