Add pre-commit hooks

Now both isort and black are included in the pre-commit hooks.

Re spine-tools/Spine-Toolbox#2897

.pre-commit-config.yaml

@@ -0,0 +1,9 @@
+repos:
+-   repo: https://github.com/pycqa/isort
+    rev: 5.13.2
+    hooks:
+    -   id: isort
+-   repo: https://github.com/python/black
+    rev: 24.4.2
+    hooks:
+    -   id: black

dev-requirements.txt

@@ -6,3 +6,4 @@ sphinx_rtd_theme
 sphinx-autoapi
 pylint
 black == 24.4.2
+pre-commit

pyproject.toml

@@ -56,13 +56,13 @@ ignore_errors = true
 
 [tool.black]
 line-length = 120
-exclude = '\.git|version.py'
+force-exclude = '\.git|version.py'
 
 [tool.isort]
 profile = "black"
 lines_between_sections = 0
 force_sort_within_sections = true
 honor_case_in_force_sorted_sections = true
-skip = ["version.py"]
+skip = [".git", "version.py"]
 line_length = 120
 known_first_party = ["spinedb_api"]