feat: 'ghq goto' command to find and go to any repo's local location, 'ghq get -' command to re-do the operation on the last used repo like 'cd - or git switch -

Summary

This issue proposes two new features for ghq: 'ghq goto' for finding and navigating to any local repository, and 'ghq get -' to re-run the last 'ghq get' operation. This involves implementing new command logic and potentially modifying existing command handling.

Skills Required

GoCommand-line interface developmentGit integration

Files Likely Touched

cmd/ghq/main.go
cmd/ghq/get.go
cmd/ghq/goto.go
ghq.go