Add TRMM C API and ScaLAPACK C wrappers

[maifeeulasad]

No description provided.

[maifeeulasad]

Tested with:

OMPI=$(spack location -i openmpi)
OBLAS=$(spack location -i openblas)

mkdir -p build
cd build
rm -f CMakeCache.txt

spack build-env /qwvdh4m -- cmake .. \
  -DCMAKE_BUILD_TYPE=Debug \
  -DDLAF_WITH_SCALAPACK=ON \
  -DBUILD_TESTING=ON \
  -DDLAF_LAPACK_LIBRARY="$OBLAS/lib/libopenblas.so" \
  -DMPI_C_COMPILER="$OMPI/bin/mpicc" \
  -DMPI_CXX_COMPILER="$OMPI/bin/mpicxx" \
  -DMPIEXEC_EXECUTABLE="$OMPI/bin/mpiexec"

spack build-env /qwvdh4m -- sh -lc 'make -j"$(nproc)" test_triangular_c_api'
spack build-env /qwvdh4m -- sh -lc 'ctest -R "^test_triangular_c_api$" --output-on-failure'

[RMeli]

@maifeeulasad thank you for your contribution to DLA-Future. This PR seems to have some of the hallmarks of LLMs (no PR description, unnecessary #include directives, long commit message for simple formatting, ...). We do not yet have an AI policy for DLA-Future, but could you please disclose any LLM usage (if any)?