Iniital CLI implementation

[salvador-barboza]

https://github.com/github/spark/issues/327

This adds the initial version of the Runtime CLI, with support for

• gh runtime get
• gh runtime delete
• gh runtime create
• gh runtime deploy (with directory zipping)

[Copilot]

Pull Request Overview

Initial implementation of a CLI for GitHub Runtime management

• Introduces a deploy command for deploying directories
• Adds a delete command to remove GitHub Runtime apps
• Establishes a root command for overall CLI execution and updates the main entry point

Reviewed Changes

Copilot reviewed 7 out of 8 changed files in this pull request and generated 1 comment.

File	Description
cmd/deploy.go	Implements the deploy command with necessary flags
cmd/delete.go	Implements the delete command with flag validation
cmd/root.go	Adds a root command for the CLI
main.go	Updates main to execute the new root command

Files not reviewed (1)

• go.mod: Language not supported

Tip: If you use Visual Studio Code, you can request a review from Copilot before you push from the "Source Control" tab. Learn more

[Copilot]

The error returned by gh.RESTClient is ignored. Add error handling to ensure that the client is properly initialized.

Suggested change

	client, _ := gh.RESTClient(&api.ClientOptions{
	// Log: os.Stderr,
	})
	client, err := gh.RESTClient(&api.ClientOptions{
	// Log: os.Stderr,
	})
	if err != nil {
	fmt.Printf("Error initializing REST client: %v\n", err)
	return
	}