Python: Added Ollama example using OpenAIChatClient (#1100)

* Added Ollama example using OpenAIChatClient

* Small improvement

python/samples/getting_started/agents/ollama/README.md

@@ -0,0 +1,30 @@
+# Ollama Examples
+
+This folder contains examples demonstrating how to use Ollama models with the Agent Framework.
+
+## Prerequisites
+
+1. **Install Ollama**: Download and install Ollama from [ollama.com](https://ollama.com/)
+2. **Start Ollama**: Ensure Ollama is running on your local machine
+3. **Pull a model**: Run `ollama pull mistral` (or any other model you prefer that supports function calling)
+
+## Examples
+
+| File | Description |
+|------|-------------|
+| [`ollama_with_openai_chat_client.py`](ollama_with_openai_chat_client.py) | Demonstrates how to configure OpenAI Chat Client to use local Ollama models. Shows both streaming and non-streaming responses with tool calling capabilities. |
+
+## Configuration
+
+The examples use environment variables for configuration:
+
+### Environment Variables
+
+Set the following environment variables before running the examples:
+
+- `OLLAMA_ENDPOINT`: The base URL for your Ollama server
+  - Example: `export OLLAMA_ENDPOINT="http://localhost:11434/v1/"`
+
+- `OLLAMA_MODEL`: The model name to use
+  - Example: `export OLLAMA_MODEL="mistral"`
+  - Must be a model you have pulled with Ollama