make: combine formatting tools, add black and isort

Makefile

@@ -78,6 +78,12 @@ style: ## run code style check on application sources and tests
 	flake8 $(shell find src -name *.py)
 	flake8 $(shell find tests -name *.py)
 
+isort:
+	isort $(shell find src -name *.py ! -path 'src/trezor/messages/*')
+
+black:
+	black $(shell find src -name *.py ! -path 'src/trezor/messages/*')
+
 ## build commands:
 
 build: build_boardloader build_bootloader build_firmware build_prodtest build_unix ## build all

pytest.ini

@@ -1,4 +0,0 @@
-[pytest]
-addopts = --pyargs trezorlib.tests.device_tests
-xfail_strict = true
-run_xfail = lisk

setup.cfg

@@ -14,3 +14,18 @@ ignore =
     F403,
     # F405: name may be undefined, or defined from star imports
     F405
+
+[isort]
+multi_line_output = 3
+include_trailing_comma = True
+force_grid_wrap = 0
+combine_as_imports = True
+line_length = 88
+not_skip=__init__.py
+forced_separate = apps
+known_standard_library = micropython,ubinascii,ustruct,uctypes,utime,utimeq,trezorio,trezorui,trezorutils,trezorconfig
+
+[tool:pytest]
+addopts = --pyargs trezorlib.tests.device_tests
+xfail_strict = true
+run_xfail =