Update __init__.py to import version from version.py

Author: xuanyang15

src/google/adk_community/__init__.py

@@ -12,5 +12,5 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# version: major.minor.patch
-__version__ = "0.1.0"
+from . import version
+__version__ = version.__version__