Convert setup.cfg configuration to pyproject.toml

Co-authored-by: martinpopel <724617+martinpopel@users.noreply.github.com>

Author: Copilot

pyproject.toml

@@ -1,6 +1,36 @@
 [build-system]
-requires = [
-    "setuptools>=42",
-    "wheel"
-]
+requires = ["setuptools>=42", "wheel"]
 build-backend = "setuptools.build_meta"
+
+[project]
+name = "udapi"
+version = "0.5.1"
+description = "Python framework for processing Universal Dependencies data"
+readme = "README.md"
+requires-python = ">=3.9"
+license = {text = "GNU General Public License v2 or later (GPLv2+)"}
+authors = [
+    {name = "Martin Popel", email = "popel@ufal.mff.cuni.cz"}
+]
+classifiers = [
+    "Programming Language :: Python :: 3",
+    "License :: OSI Approved :: GNU General Public License v2 or later (GPLv2+)",
+    "Operating System :: OS Independent",
+]
+dependencies = [
+    "colorama",
+    "termcolor",
+]
+
+[project.urls]
+Homepage = "https://github.com/udapi/udapi-python"
+
+[project.optional-dependencies]
+test = ["pytest"]
+
+[project.scripts]
+udapy = "udapi.cli:main"
+
+[tool.setuptools]
+packages = {find = {}}
+include-package-data = true