codegen: VHDL generation for register based storage

b_asic/codegen/testbench/.gitignore

.../codegen/testbench/streaming_matrix_transposition_tb.vhdl

b_asic/codegen/testbench/test.py

b_asic/codegen/vhdl/__init__.py

b_asic/codegen/vhdl/architecture.py

b_asic/codegen/vhdl/common.py

b_asic/codegen/vhdl/entity.py

b_asic/resources.py

docs_sphinx/codegen/index.rst

docs_sphinx/codegen/vhdl.rst

docs_sphinx/index.rst

test/test_resources.py