More docs and typing fixes

b_asic/architecture.py

b_asic/codegen/vhdl/__init__.py

b_asic/core_operations.py

b_asic/operation.py

b_asic/resources.py

b_asic/schedule.py

b_asic/scheduler.py

b_asic/scheduler_gui/main_window.py

b_asic/scheduler_gui/operation_item.py

docs_sphinx/codegen/vhdl.rst