Added poetry integration.

Description:
* Fixed github actions;
* Removed requirements.txt;
* Fixed CONTRIBUTING.md;
* Fixed black and flake8.

Signed-off-by: Pavel <win10@list.ru>

tests/test_model_definition/pks_and_fks/test_saving_string_pks.py

@@ -62,18 +62,18 @@ async def cleanup():
 @pytest.mark.asyncio
 async def test_creating_a_position(cleanup):
     async with database:
-        instance = PositionOrm(name="my_pos", x=1.0, y=2.0, degrees=3.0,)
+        instance = PositionOrm(name="my_pos", x=1.0, y=2.0, degrees=3.0)
         await instance.save()
         assert instance.saved
         assert instance.name == "my_pos"
 
-        instance2 = PositionOrmDef(x=1.0, y=2.0, degrees=3.0,)
+        instance2 = PositionOrmDef(x=1.0, y=2.0, degrees=3.0)
         await instance2.save()
         assert instance2.saved
         assert instance2.name is not None
         assert len(instance2.name) == 12
 
-        instance3 = PositionOrmDef(x=1.0, y=2.0, degrees=3.0,)
+        instance3 = PositionOrmDef(x=1.0, y=2.0, degrees=3.0)
         await instance3.save()
         assert instance3.saved
         assert instance3.name is not None

tests/test_model_definition/test_fields_access.py

@@ -117,7 +117,7 @@ def test_operator_return_proper_filter_action(method, expected, expected_value):
     }
 
 
-@pytest.mark.parametrize("method, expected_direction", [("asc", ""), ("desc", "desc"),])
+@pytest.mark.parametrize("method, expected_direction", [("asc", ""), ("desc", "desc")])
 def test_operator_return_proper_order_action(method, expected_direction):
     action = getattr(Product.name, method)()
     assert action.source_model == Product

tests/test_model_definition/test_models.py

@@ -126,7 +126,7 @@ class Country(ormar.Model):
 
     id: int = ormar.Integer(primary_key=True)
     name: str = ormar.String(
-        max_length=9, choices=country_name_choices, default="Canada",
+        max_length=9, choices=country_name_choices, default="Canada"
     )
     taxed: bool = ormar.Boolean(choices=country_taxed_choices, default=True)
     country_code: int = ormar.Integer(

tests/test_model_definition/test_saving_nullable_fields.py

@@ -35,7 +35,7 @@ class SecondaryModel(ormar.Model):
     id: int = ormar.Integer(primary_key=True)
     name: str = ormar.String(max_length=100)
     primary_model: PrimaryModel = ormar.ForeignKey(
-        PrimaryModel, related_name="secondary_models",
+        PrimaryModel, related_name="secondary_models"
     )