chore(looker): add dagster-looker to release pipeline (#21810)

## Summary & Motivation
Undo
#21284 (comment).

## How I Tested These Changes
N/A

python_modules/libraries/dagster-looker/dagster_looker/__init__.py

@@ -1,7 +1,5 @@
 from dagster._core.libraries import DagsterLibraryRegistry
 
-# Move back to version.py and edit setup.py once we are ready to publish.
-__version__ = "1!0+dev"
-
+from .version import __version__ as __version__
 
 DagsterLibraryRegistry.register("dagster-looker", __version__)

python_modules/libraries/dagster-looker/dagster_looker/version.py

@@ -0,0 +1 @@
+__version__ = "1!0+dev"

python_modules/libraries/dagster-looker/setup.py

@@ -1,8 +1,15 @@
+from pathlib import Path
+from typing import Dict
+
 from setuptools import find_packages, setup
 
 
 def get_version() -> str:
-    return "1!0+dev"
+    version: Dict[str, str] = {}
+    with open(Path(__file__).parent / "dagster_looker/version.py", encoding="utf8") as fp:
+        exec(fp.read(), version)
+
+    return version["__version__"]
 
 
 ver = get_version()