analysis: add s.p.(s)d. matrix utils, PQ norms and abstraction coefficients

src/analysis.py

src/test/analysis/__init__.py

src/test/analysis/abstraction_global_coefficients.py

src/test/analysis/abstraction_mode_coefficients.py

src/test/analysis/is_spd.py

src/test/analysis/is_spsd.py

src/test/analysis/is_symmetric.py

src/test/analysis/pq_norm.py