🔧 upgrade tooling, use pyproject.toml

pyproject.toml

@@ -0,0 +1,26 @@
+[project]
+name = "froide_govplan"
+readme = "README.md"
+description = ""
+license = { file = "LICENSE" }
+requires-python = ">=3.10"
+classifiers = [
+  "Development Status :: 5 - Production/Stable",
+  "Framework :: Django",
+  "Intended Audience :: Developers",
+  "License :: OSI Approved :: MIT License",
+  "Operating System :: OS Independent",
+  "Programming Language :: Python",
+  "Programming Language :: Python :: 3.10",
+  "Programming Language :: Python :: 3.12",
+  "Topic :: Utilities",
+]
+dynamic = ["version"]
+dependencies = ["froide"]
+
+[build-system]
+requires = ["setuptools"]
+build-backend = "setuptools.build_meta"
+
+[tool.setuptools]
+packages = ["froide_govplan"]