Add complex type support for hipBLAS GEAM

[nbeams]

cgeam and zgeam were added to hipBLAS in ROCm 3.6.0, so we can expand the hipBLAS bindings.

(Needed over in #1814)

[nbeams]

Does this need an entry in the changelog, or not?

[upsj]

Do we have any public-facing function that uses it? Maybe dense complex transpose? In that case I would say yes, otherwise no.

[nbeams]

Hmm, yeah, it does look like it's used in dense transpose. I'll add it to the changelog, then -- once that's done, are there any complaints if I go ahead and merge this? wait, I guess that means I should also enable the transpose tests that are currently not done for HIP in this PR...

[nbeams]

For Fbcsr, I enabled all the tests for complex types, which passed when I tested locally (with the half precision tests skipped). For Dense, it was just the conjugate transpose tests that were guarded for HIP.

In the header file/doc strings for Fbcsr, I didn't see any specific note about it not being available for complex types with HIP, but since it wasn't tested, is that true? (I am wondering how much needs to go in the changelog.)

[yhmtsai]

I think something like enable complex support of Dense transpose and FbCsr on AMD GPU in the changelog should be enough.