chore: import upstream snapshot with attribution

examples/code_generator_graph/README.md

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+# Code Generator Graph Example
+
+This example demonstrates how to use Scrapegraph-ai to generate code based on specifications and requirements.
+
+## Features
+
+- Code generation from specifications
+- Multiple programming languages support
+- Code documentation
+- Best practices implementation
+
+## Setup
+
+1. Install required dependencies
+2. Copy `.env.example` to `.env`
+3. Configure your API keys in the `.env` file
+
+## Usage
+
+```python
+from scrapegraphai.graphs import CodeGeneratorGraph
+
+graph = CodeGeneratorGraph()
+code = graph.generate("code specification")
+```
+
+## Environment Variables
+
+Required environment variables:
+- `OPENAI_API_KEY`: Your OpenAI API key