* feat: add Pigeonhole algorithm

* Executed clang-format

* Used pointers and vector

* Corrected clang-tidy issues

* Modified code structure

* Apply suggestions from code review

Suggested changes applied
Co-authored-by: NDavid Leal <halfpacho@gmail.com>

* Added missing parameter and documentation

* Added delete function

* Update pigeonhole_sort.cpp

* Corrected delete function
Co-authored-by: NDavid Leal <halfpacho@gmail.com>

* Apply suggestions from code review
Co-authored-by: NDavid Leal <halfpacho@gmail.com>

* Apply suggestions from code review
Co-authored-by: NDavid Leal <halfpacho@gmail.com>

* Changed documentation regarding array size

* clang-tidy

* Apply suggestions from code review
Co-authored-by: NDavid Leal <halfpacho@gmail.com>

* assert moved to test function

* Update pigeonhole_sort.cpp

* Update sorting/pigeonhole_sort.cpp
Co-authored-by: NDavid Leal <halfpacho@gmail.com>

* Added test function and inbuilt min function

* min and max to const variables

* const int* to auto

* const int* to auto

* Apply suggestions from code review
Co-authored-by: NKrishna Vedala <7001608+kvedala@users.noreply.github.com>

* Modified pigeonSort documentation

* Corrected test functions
Co-authored-by: Nlsurface <lownish@hotmail.com>
Co-authored-by: NDavid Leal <halfpacho@gmail.com>
Co-authored-by: NKrishna Vedala <7001608+kvedala@users.noreply.github.com>