feat: display the command used on the generated combined PR

[GrantBirki]

resolves: #25

[Copilot]

Pull Request Overview

This PR adds functionality to display the CLI command used for generating the combined PR, aiding in traceability and debugging. Key changes include:

• Adding a new utility function buildCommandString to reconstruct the original CLI command.
• Updating CombinePRsWithStats and generatePRBody to accept and display the command string.
• Modifying processRepository to pass the command string when combining PRs.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
internal/cmd/root.go	Imports "strings" and uses buildCommandString to pass the command string to the combine function.
internal/cmd/combine_prs.go	Adjusts CombinePRsWithStats and generatePRBody to include and display the command used.

Comments suppressed due to low confidence (2)

internal/cmd/root.go:427

• Consider adding unit tests for buildCommandString to verify that various flag combinations produce the expected command string.

func buildCommandString(args []string) string {

internal/cmd/combine_prs.go:196

• [nitpick] Consider adding tests for generatePRBody to ensure that the command string is correctly integrated into the PR body, and handle cases where the command string may be empty or contain excess whitespace.

body += fmt.Sprintf("\nCommand used:\n\n```bash\n%s\n```", command)