feat(cli): add CLI `--dry-run` flag

[ekkolon]

Description:

Objective:
Implement a --dry-run flag in the CLI to allow users to simulate the licensing process without making actual changes to files.

Features:

• Introduce a --dry-run flag for the CLI.
• When the --dry-run flag is used, the CLI should output the intended changes without applying them.
• Ensure that the dry run accurately reflects the actions that would be taken during a regular run.

Motivation:

• Users may want to preview the changes the CLI will make before applying them.
• Enhances user confidence in the licensing process.

Tasks:

• CLI Modification:

  • Add support for the --dry-run flag in the CLI parsing logic.

• Simulation Output:

  • Implement the logic to simulate the licensing process without actually modifying files.
  • Output the intended changes to the console.

• Documentation:

  • Update the CLI documentation to include information about the new --dry-run flag.
  • Provide examples and usage instructions.

• Testing:

  • Create test cases to ensure that the --dry-run flag functions as expected.
  • Include tests for various scenarios, including different licensing configurations.