Task #893: split up long code files in smaller ones

tools/oneclick/prestudy/YAML/py_mm_lib/__init__.py

tools/oneclick/prestudy/YAML/py_mm_lib/peripheral.py

...eclick/prestudy/YAML/py_mm_lib/peripheral_lib/__init__.py

...ick/prestudy/YAML/py_mm_lib/peripheral_lib/base_object.py

...click/prestudy/YAML/py_mm_lib/peripheral_lib/constants.py

.../oneclick/prestudy/YAML/py_mm_lib/peripheral_lib/field.py

...s/oneclick/prestudy/YAML/py_mm_lib/peripheral_lib/fifo.py

tools/oneclick/prestudy/YAML/py_mm_lib/peripheral_lib/ram.py

...eclick/prestudy/YAML/py_mm_lib/peripheral_lib/register.py