move isort, black config to pyproject.toml (#817)

this way, the formatters produce the same output whether run via pre-commit or not

Author: minrk

.pre-commit-config.yaml

@@ -19,14 +19,12 @@ repos:
     rev: 22.3.0
     hooks:
       - id: black
-        args: ["--line-length", "100"]
 
   - repo: https://github.com/PyCQA/isort
     rev: 5.10.1
     hooks:
       - id: isort
         files: \.py$
-        args: [--profile=black]
 
   - repo: https://github.com/pre-commit/mirrors-mypy
     rev: v0.942

pyproject.toml

@@ -74,6 +74,12 @@ test = [
 [project.scripts]
 jupyter-server = "jupyter_server.serverapp:main"
 
+[tool.black]
+line_length = 100
+
+[tool.isort]
+profile = "black"
+
 [tool.pytest.ini_options]
 addopts = "-raXs --durations 10 --color=yes --doctest-modules"
 testpaths = [