refactor(setup): enhance setup.py with additional metadata and constants

setup.py

@@ -1,15 +1,28 @@
 # Imports #
+import os
+
 from setuptools import setup, find_packages
 
+# Constants #
+DIRNAME = os.path.dirname(__file__)
+SHORT_DESCRIPTION = "Receive instant GitHub notifications on your Linux desktop"
+LONG_DESCRIPTION = open(os.path.join(DIRNAME, "docs", "README.md")).read()
+
+__version__ = "1.0.0"
+
 # Setup #
 setup(
     name="github-desktop-notifier",
-    version="1.0.0",
-    description="Receive instant GitHub notifications on your Linux desktop",
+    version=__version__,
+    description=SHORT_DESCRIPTION,
+    long_description=LONG_DESCRIPTION,
+    long_description_content_type="text/markdown",
     url="https://github.com/bytexenon/Github-Desktop-Notifier",
     author="bytexenon",
     author_email="[email protected]",
     license="MIT",
+    python_requires=">=3.6",
+    include_package_data=True,
     classifiers=[
         "Development Status :: 4 - Beta",
         "Intended Audience :: Developers",
@@ -24,6 +37,12 @@
         "Programming Language :: Python :: 3.11",
         "Programming Language :: Python :: 3.12",
     ],
+    project_urls={
+        "Documentation": "https://github.com/bytexenon/Github-Desktop-Notifier",
+        "Source": "https://github.com/bytexenon/Github-Desktop-Notifier",
+        "Tracker": "https://github.com/bytexenon/Github-Desktop-Notifier/issues",
+        "Changelog": "https://github.com/bytexenon/Github-Desktop-Notifier/releases",
+    },
     keywords="github desktop notifier linux notifications dunstify gh",
     packages=find_packages(exclude=["tests", "docs"]),
     install_requires=["requests"],