Run test without googletest dependencies

[isratnisa]

I want to run the code for a single matrix without depending on googletest, e.g., something like "/.spmm [options] tmp.mtx". Is that possible with the current code? P.S. the code runs and passes all the test cases performed by spmm_test.

[tgale96]

Hi Israt! That is not currently supported, although we welcome contributions:)

If you'd like to create this yourself I'd recommend starting from the existing benchmarks for external matrices here. We haven't stabilized the public build yet so please let us know if you have any issues and we'll be happy to help!