Create Q15-Stickler Thief

[Abiral-2724]

Dear Maintainers,

I've contributed to the repository by adding the Stickler Thief problem statement along with its corresponding test cases and constraints. This pull request includes:

Problem Statement: I've provided a well-defined problem statement for the Stickler Thief problem, outlining the problem's requirements and constraints clearly. This will enable users to understand the problem easily and work on finding a solution.
Test Cases: I've included a comprehensive set of test cases covering various scenarios and edge cases, ensuring that any future solutions can be thoroughly validated.
Constraints: I've specified the constraints related to input size, helping users understand the limitations of the problem and guiding them in designing efficient solutions.
By adding this problem to the repository, I intend to enhance the learning experience for users, allowing them to practice and improve their problem-solving skills in the context of the Stickler Thief problem.

Thank you for your time and consideration. I'm open to any feedback and eager to contribute further .

Best regards,
Abiral jain