update task_2/README.md

update README.md

update task_2/README.md

update task_2/README.md

update task_2/requirements.txt

create task_2/tests/__init__.py

update task_2/tests/test_get_seller_items.py

update task_2/tests/test_get_item.py

update task_2/tests/test_create_item.py

create task_2/tests/test_create_item.py

create task_2/tests/test_get_seller_items.py

create task_2/tests/test_get_item.py

create task_2/utils/__init__.py

api client

project requirements

pytest config ini

describing project

update task_2/TESTCASES.md

update task_2/BUGS.md

update task_2/BUGS.md