refactor(string_operations.h/cpp): add new util operations

[pedrobiqua]

Pull Request

Checklist

Please ensure that your PR fulfills the following requirements:

• Unit tests have been added or updated for the changes (for bugfixes or new features).
• Code compiles without warnings or errors.
• All new and existing tests pass locally.
• Code follows the project's C++ style guidelines (e.g., naming conventions, indentation).
• Documentation has been updated where applicable (e.g., function headers, inline comments).

PR Type

What type of change does this PR introduce?

• Bugfix
• New feature
• Performance improvement
• Code style update (formatting, naming conventions)
• Refactoring (no functional or API changes)
• Build or configuration changes
• CI-related changes
• Documentation updates
• Other (please describe):

What is the current behavior?

Issue Number: resolve #46

What is the new behavior?

Change files that use these string operations

Does this PR introduce a breaking change?

• Yes
• No

Testing Details

All pass!