Allow package to be imported when not installed

Author: alexmalins

src/tentaclio_postgres/__init__.py

@@ -1,13 +1,17 @@
 """This package implements the tentaclio postgres client"""
 
+from importlib.metadata import PackageNotFoundError
 from importlib.metadata import version as _version
 
 from tentaclio import *  # noqa
 
 from .clients.postgres_client import PostgresClient
 from .streams.postgres_handler import PostgresURLHandler
 
-__version__ = _version("tentaclio-postgres")
+try:
+    __version__ = _version("tentaclio-postgres")
+except PackageNotFoundError:
+    __version__ = "0.0.0"
 
 # Db registry
 DB_REGISTRY.register("postgresql", PostgresClient)  # type: ignore