Add mypy and partial typing #4692

	name: check setup.py

	on:
	push:
	paths-ignore:
	- 'docs/**'
	pull_request:
	paths-ignore:
	- 'docs/**'
	workflow_dispatch:

	jobs:
	test:
	name: Test setup.py
	runs-on: ubuntu-latest


	steps:
	- name: Checkout Code
	uses: actions/checkout@v3
	- name: Hack to get setup-python to work on nektos/act
	run: \|
	if [ ! -f "/etc/lsb-release" ] ; then
	echo "DISTRIB_RELEASE=18.04" > /etc/lsb-release
	fi
	- name: Set up Python 3.7
	uses: actions/setup-python@v4
	with:
	python-version: 3.7
	- uses: actions/cache@v2
	with:
	path: ${{ env.pythonLocation }}
	key: cache_v2_${{ env.pythonLocation }}-${{ hashFiles('requirements/**') }}
	- name: Install Dependencies and lightly
	run: pip install .
	- name: basic tests of CLI
	run: \|
	LIGHTLY_SERVER_LOCATION="localhost:-1"
	lightly-crop --help
	lightly-train --help
	lightly-embed --help
	lightly-magic --help
	lightly-download --help
	lightly-version
	- name: test of CLI on a real dataset
	run: \|
	LIGHTLY_SERVER_LOCATION="localhost:-1"
	git clone https://github.com/alexeygrigorev/clothing-dataset-small clothing_dataset_small
	INPUT_DIR_1="clothing_dataset_small/test/dress"
	lightly-train input_dir=$INPUT_DIR_1 trainer.max_epochs=1 loader.num_workers=6
	lightly-embed input_dir=$INPUT_DIR_1

Provide feedback