Moving the copilot-sdk cookbook content in here

cookbook/copilot-sdk/go/recipe/README.md

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+# Runnable Recipe Examples
+
+This folder contains standalone, executable Go examples for each cookbook recipe. Each file is a complete program that can be run directly with `go run`.
+
+## Prerequisites
+
+- Go 1.21 or later
+- GitHub Copilot SDK for Go
+
+```bash
+go get github.com/github/copilot-sdk/go
+```
+
+## Running Examples
+
+Each `.go` file is a complete, runnable program. Simply use:
+
+```bash
+go run <filename>.go
+```
+
+### Available Recipes
+
+| Recipe               | Command                          | Description                                |
+| -------------------- | -------------------------------- | ------------------------------------------ |
+| Error Handling       | `go run error-handling.go`       | Demonstrates error handling patterns       |
+| Multiple Sessions    | `go run multiple-sessions.go`    | Manages multiple independent conversations |
+| Managing Local Files | `go run managing-local-files.go` | Organizes files using AI grouping          |
+| PR Visualization     | `go run pr-visualization.go`     | Generates PR age charts                    |
+| Persisting Sessions  | `go run persisting-sessions.go`  | Save and resume sessions across restarts   |
+
+### Examples with Arguments
+
+**PR Visualization with specific repo:**
+
+```bash
+go run pr-visualization.go -repo github/copilot-sdk
+```
+
+**Managing Local Files (edit the file to change target folder):**
+
+```bash
+# Edit the targetFolder variable in managing-local-files.go first
+go run managing-local-files.go
+```
+
+## Go Best Practices
+
+These examples follow Go conventions:
+
+- Proper error handling with explicit checks
+- Use of `defer` for cleanup
+- Idiomatic naming (camelCase for local variables)
+- Standard library usage where appropriate
+- Clean separation of concerns
+
+## Learning Resources
+
+- [Go Documentation](https://go.dev/doc/)
+- [GitHub Copilot SDK for Go](https://github.com/github/copilot-sdk/blob/main/go/README.md)
+- [Parent Cookbook](../README.md)