pyproject: move metadata from setup.py

pyproject.toml

@@ -0,0 +1,68 @@
+[build-system
+build-backend = "setuptools.build_meta"
+requires = [
+    "setuptools>=63",
+]
+
+[project]
+name = "meshmode"
+version = "2021.2"
+description = "High-order polynomial discretizations of and on meshes"
+readme = "README.rst"
+license = { text = "MIT" }
+authors = [
+    { name = "Andreas Kloeckner", email = "inform@tiker.net" },
+]
+requires-python = ">=3.8"
+classifiers = [
+    "Development Status :: 3 - Alpha",
+    "Intended Audience :: Developers",
+    "Intended Audience :: Other Audience",
+    "Intended Audience :: Science/Research",
+    "License :: OSI Approved :: MIT License",
+    "Natural Language :: English",
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3",
+    "Topic :: Scientific/Engineering",
+    "Topic :: Scientific/Engineering :: Information Analysis",
+    "Topic :: Scientific/Engineering :: Mathematics",
+    "Topic :: Scientific/Engineering :: Visualization",
+    "Topic :: Software Development :: Libraries",
+    "Topic :: Utilities",
+]
+dependencies = [
+    "arraycontext>=2021.1",
+    "gmsh_interop>=2021.1",
+    "loopy>=2024.1",
+    "modepy>=2021.1",
+    "numpy",
+    "pymbolic>=2022.2",
+    "pytools>=2022.1",
+    "recursivenodes",
+]
+
+[project.optional-dependencies]
+doc = [
+    "furo",
+    "sphinx-copybutton",
+    "sphinx>=4",
+]
+visualization = [
+    "h5py",
+    "pyvisfile>=2022.1",
+]
+test = [
+    "mypy",
+    "pylint",
+    "pytest",
+    "ruff",
+]
+
+[project.urls]
+Documentation = "https://documen.tician.de/meshmode"
+Repository = "https://github.com/inducer/meshmode"
+
+[tool.setuptools.packages.find]
+include = [
+    "meshmode*",
+]