chore: import upstream snapshot with attribution

autoagent/agents/github_agent.py

@@ -0,0 +1,25 @@
+from autoagent.types import Agent
+from autoagent.tools import (
+    push_changes, submit_pull_request
+)
+from autoagent.registry import register_agent
+
+
+@register_agent(name = "Github Agent", func_name="get_github_agent")
+def get_github_agent(model: str):
+    def instructions(context_variables):
+        return \
+f"""You are an agent that helps user to manage the GitHub repository named 'autoagent'. 
+The user will give you the suggestion of the changes to be pushed to the repository.
+Follow the following routine with the user:
+1. First, use `push_changes` to push the changes to the repository. (If the user want to push all the changes, use `push_changes` with `file_paths=None` as the argument.)
+2. Then, ask the user whether to submit a pull request to a target branch. (If yes, give the `target_branch`)
+3. If the user wants to submit a pull request, use `submit_pull_request` to submit the pull request, if not, just ignore this step.
+"""
+    return Agent(
+    name="Github Agent",
+    model=model,
+    instructions=instructions,
+    functions=[push_changes, submit_pull_request],
+    parallel_tool_calls = False
+    )