style: move isort and pytest config to pyproject

pyproject.toml

@@ -1,3 +1,27 @@
 [tool.black]
 line-length = 119
 target-version = ['py36']
+
+[tool.isort]
+line_length = 119
+multi_line_output = 3
+include_trailing_comma = true
+force_grid_wrap = 0
+use_parentheses = true
+ensure_newline_before_comments = true
+lines_after_imports = 2
+default_section = "FIRSTPARTY"
+known_first_party = "pet"
+known_third_party = [
+    "numpy",
+    "torch",
+    "accelerate",
+    "transformers",
+]
+
+[tool.pytest.ini_options]
+doctest_optionflags = [
+    "NUMBER",
+    "NORMALIZE_WHITESPACE",
+    "ELLIPSIS",
+]

setup.cfg

@@ -1,23 +1,3 @@
-[isort]
-default_section = FIRSTPARTY
-ensure_newline_before_comments = True
-force_grid_wrap = 0
-include_trailing_comma = True
-known_first_party = pet
-known_third_party =
-    numpy
-    torch
-    accelerate
-    transformers
-
-line_length = 119
-lines_after_imports = 2
-multi_line_output = 3
-use_parentheses = True
-
 [flake8]
 ignore = E203, E722, E501, E741, W503, W605
 max-line-length = 119
-
-[tool:pytest]
-doctest_optionflags=NUMBER NORMALIZE_WHITESPACE ELLIPSIS