chore: Add initial version of agent builder assistant that assists user to build config based agent

PiperOrigin-RevId: 801014241

contributing/samples/adk_agent_builder_assistant/__init__.py

@@ -0,0 +1,28 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Agent Builder Assistant for ADK.
+
+This package provides an intelligent assistant for building multi-agent systems
+using YAML configurations. It can be used directly as an agent or integrated
+with ADK tools and web interfaces.
+"""
+
+from . import agent  # Import to make agent.root_agent available
+from .agent_builder_assistant import AgentBuilderAssistant
+
+__all__ = [
+    'AgentBuilderAssistant',
+    'agent',  # Make agent module available for adk web discovery
+]