really add pyproject.toml

Author: fchapoton

pyproject.toml

@@ -0,0 +1,41 @@
+[build-system]
+requires = ["setuptools"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "dot2tex"
+version = '2.12.0'
+
+description = "A Graphviz to LaTeX converter"
+readme = "readme.md"
+requires-python = ">=3.7"
+dependencies = [
+    "pyparsing >= 3.0",
+]
+authors = [
+  {name = "Kjell Magne Fauske", email = "kjellmf@gmail.com"},
+]
+license = "MIT"
+
+classifiers = [
+  'Development Status :: 4 - Beta',
+  'Environment :: Console',
+  'Intended Audience :: Science/Research',
+  'Natural Language :: English',
+  'Operating System :: OS Independent',
+  'Programming Language :: Python :: 3',
+  'Topic :: Scientific/Engineering :: Visualization',
+  'Topic :: Text Processing :: Markup :: LaTeX',
+  'Topic :: Utilities',
+]
+
+[project.urls]
+"Homepage" = "https://github.com/sagemath/dot2tex"
+
+[project.scripts]
+dot2tex = "dot2tex.dot2tex:main"
+
+[project.optional-dependencies]
+test = [
+    "pytest",
+]