This pull request introduces a new utility function to unescape special characters in replacement strings and adds several test cases to ensure its functionality. The key changes include the addition of a new import, the implementation of the unescapeString function, its integration into the Run method, and the inclusion of new test cases.

Key Changes:

Code Enhancements:

• internal/cli/cli.go: Added strings package to handle string replacements.
• internal/cli/cli.go: Implemented unescapeString function to convert escaped sequences like \n, \t, and \r to their actual characters.
• internal/cli/cli.go: Integrated unescapeString into the Run method to process replacement strings.

Testing:

• internal/cli/cli_test.go: Added multiple test cases to verify the correct handling of special characters, including newlines, tabs, and carriage returns in replacement strings.