Add OAuth proxy that allows authentication with social IDPs without DCR support (#1434)

examples/auth/github_oauth/README.md

@@ -0,0 +1,31 @@
+# GitHub OAuth Example
+
+Demonstrates FastMCP server protection with GitHub OAuth.
+
+## Setup
+
+1. Create a GitHub OAuth App:
+   - Go to GitHub Settings > Developer settings > OAuth Apps
+   - Set Authorization callback URL to: `http://localhost:8000/oauth/callback`
+   - Copy the Client ID and Client Secret
+
+2. Set environment variables:
+
+   ```bash
+   export FASTMCP_SERVER_AUTH_GITHUB_CLIENT_ID="your-client-id"
+   export FASTMCP_SERVER_AUTH_GITHUB_CLIENT_SECRET="your-client-secret"
+   ```
+
+3. Run the server:
+
+   ```bash
+   python server.py
+   ```
+
+4. In another terminal, run the client:
+
+   ```bash
+   python client.py
+   ```
+
+The client will open your browser for GitHub authentication.