Add support for M and/or N equals 1 to matrix pseudo-inverse

Description

Adds support for M and/or N equals 1 to matrix pseudo-inverse function. Also updates the tests and benchmarks to include these cases.

Checklist

• Contribution meets RAL's licence terms
• [N/A] New functions adhere to RAL's naming scheme
• Contribution conforms to RAL's directory structure
• Documentation updated
• clang-format and clang-tidy run and changes included (C/C++ code)
• [N/A] flake8 run and changes included (Python code)
• Tests added or updated
• Tests pass when run with AddressSanitizer
• Benchmarks added or updated