feat(cli): remove placeholder flags

[jmelosegui]

• remove placeholder flags;
• cleanup unused dirs (tools, internal/config, internal/logging)

[Copilot]

Pull Request Overview

This PR removes placeholder command-line flags and cleans up unused directory structures to streamline the codebase. The changes eliminate non-functional flags that were serving as placeholders and remove empty package directories that are no longer needed.

• Removed placeholder --debug and --no-color flags from the CLI
• Deleted unused directory structures (tools, internal/config, internal/logging)

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
cmd/git-sweep/main.go	Removes placeholder flags (debug, noColor) and their associated variable declarations and usage references
tools/README.md	Deletes the entire tools directory documentation
internal/logging/doc.go	Removes the logging package documentation
internal/config/doc.go	Removes the config package documentation