chore: add metadata

pyproject.toml

@@ -185,6 +185,31 @@ name = "PrettyQt"
 version = "1.57.2"
 description = "A pythonic layer on top of PyQt6 / PySide6"
 readme = 'README.md'
+license = "MIT"
+documentation = "https://phil65.github.io/PrettyQt/index.html"
+keywords = [
+    "qt",
+    "pyqt",
+    "pyside",
+    "widgets",
+    "components",
+    "framework",
+    "gui",
+]
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Environment :: X11 Applications :: Qt",
+    "Intended Audience :: Developers",
+    "License :: OSI Approved :: MIT License",
+    "Operating System :: OS Independent",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3 :: Only",
+    "Programming Language :: Python :: 3.11",
+    # "Programming Language :: Python :: 3.12",
+    "Topic :: Desktop Environment",
+    "Topic :: Software Development :: User Interfaces",
+    "Topic :: Software Development :: Widget Sets",
+]
 repository = "https://github.com/phil65/prettyqt"
 homepage = "https://github.com/phil65/prettyqt"
 authors = ["phil65 <philipptemminghoff@googlemail.com>"]