Add function to print slices of tensors to help debug

[AviralGoelAMD]

Proposed changes

This PR adds a new function to check_err.hpp void compare_vector_range(const Range1& vec1, const Range2& vec2, size_t start_index, size_t num_elements, const std::string& msg = "Comparing Results:")

It lets the user pass two tensors, a starting index & number of elements to then print those values side by side to compare.

The PR also includes refactoring (moving a function out of gemm_example.inc to check_err) and documentation.

Checklist

Please put an x into the boxes that apply. You can also fill these out after creating the PR. If you're not sure, please don't hesitate to ask.

• I have added tests relevant to the introduced functionality, and the unit tests are passing locally
• I have added the test to REGRESSION_TESTS list defined at the top of CMakeLists.txt in tests/CMakeLists.txt, IF the test takes more than 30 seconds to run.
• I have added inline documentation which enables the maintainers with understanding the motivation
• I have removed the stale documentation which is no longer relevant after this pull request
• (If this change is user-facing) I have added release notes which provide the end users with a brief summary of the improvement from this pull request
• I have run clang-format on all changed files
• Any dependent changes have been merged

Discussion

If this is a relatively large or complex change, feel free to start a discussion by explaining why you chose the solution you did and what alternatives you considered