Adapted examples added tests for examples, added utils

examples/__init__.py

examples/example_basic.py

examples/example_readme.py

src/robofish/io/__init__.py

src/robofish/io/entity.py

src/robofish/io/file.py

src/robofish/io/utils.py

tests/robofish/evaluate/test_app_evaluate.py

tests/robofish/io/test_app_io.py

tests/robofish/io/test_entity.py

tests/robofish/io/test_examples.py

tests/robofish/io/test_file.py

tests/robofish/io/test_io.py