* feat: add count_paths algorithm with a test case
* fix: updated number_of_paths algorithm, added more test cases, and set unsigned int as parameter
* fix: replaced unsigned int with std::uint32_t for fixed size
* fix: Handled empty graph, invalid input and added test cases for the same
* clang-format and clang-tidy fixes for 80e27baa
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Co-authored-by: realstealthninja <68815218+realstealthninja@users.noreply.github.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
