add lmove operation

[BGroever]

add lmove operation

[cunla]

can you add tests to the command?

[BGroever]

can you add tests to the command?

Yes, stil working on that. I just created the PR for better code review. I will ping you when I am done.

[cunla]

@BGroever, can you check why the tests are failing with redis <= 4.0.1 and aioredis==1.3.1?
If you wish to reproduce locally, you can use poetry commands:

poetry install
poetry run pip install redis==4.0.1 aioredis==1.3.1
poetry run pytest -v

[cunla]

Actually, just realized the tests fail because of changes in redis-py ver 4.1.2 - I will add a new annotation for tests that should run only for redis>4.1.2