feat: add new median search algorithm with linked list

[weiss-ben]

Description of Change

Added a new implementation of the median search algorithm using linked lists.

Checklist

• [x ] Added description of change
• [ x] Added file name matches File name guidelines
• [x ] Added tests and example, test must pass
• [ x] Added documentation so that the program is self-explanatory and educational - Doxygen guidelines
• [ x] Relevant documentation/comments is changed or added
• [x ] PR title follows semantic commit guidelines
• [x ] Search previous suggestions before making a new one, as yours may be a duplicate.
• [x ] I acknowledge that all my contributions will be made under the project's license.

Notes: