style: common config for flake8 and isort

.flake8

@@ -1,26 +0,0 @@
-[flake8]
-filename =
-    *.py,
-    ./trezorctl
-exclude =
-    .tox/,
-    build/,
-    dist/,
-    vendor/,
-ignore =
-    # F401: module imported but unused
-    F401,
-    # E241: multiple spaces after ':'
-    E241,
-    # E402: module level import not at top of file
-    E402,
-    # E501: line too long
-    E501,
-    # E722: do not use bare except
-    E722,
-    # E741: ambiguous variable name
-    E741,
-    ##### E266: too many leading '#' for block comment
-    E266,
-    # W503 line break before binary operator
-    W503,

setup.cfg

@@ -0,0 +1,33 @@
+[flake8]
+filename =
+    *.py,
+    ./trezorctl
+exclude =
+    .tox/,
+    build/,
+    dist/,
+    vendor/,
+    trezorlib/messages/__init__.py
+ignore =
+    # E203 whitespace before ':'
+    E203,
+    # E221: multiple spaces before operator
+    E221,
+    # E241: multiple spaces after ':'
+    E241,
+    # E402: module level import not at top of file
+    E402,
+    # E501: line too long
+    E501,
+    # E741 ambiguous variable name
+    E741,
+    # W503: line break before binary operator
+    W503
+
+[isort]
+multi_line_output = 3
+include_trailing_comma = True
+force_grid_wrap = 0
+combine_as_imports = True
+line_length = 88
+not_skip=__init__.py