refactor(api): remove __version__ from exports

* Cleaned up the public API by removing __version__ from the exported symbols.
* This change simplifies the module's interface.

Author: atasoglu

sqlite_vec_client/__init__.py

@@ -15,7 +15,6 @@
 from .logger import get_logger
 
 __all__ = [
-    "__version__",
     "SQLiteVecClient",
     "VecClientError",
     "ValidationError",