Added function seq.alg.GlobalAlign

modules/seq/alg/doc/seqalg.rst

modules/seq/alg/pymod/wrap_seq_alg.cc

modules/seq/alg/src/CMakeLists.txt

modules/seq/alg/src/global_align.cc

modules/seq/alg/src/global_align.hh

modules/seq/alg/src/impl/align_impl.hh

modules/seq/alg/src/local_align.cc

modules/seq/alg/tests/CMakeLists.txt

modules/seq/alg/tests/test_global_align.py