pyproject: add Python versions for pypi/github badge

Change-Id: Ib0b0d3feaca9d02fee78f047c31d6dd3451f74e2

Author: xqt

pyproject.toml

@@ -92,6 +92,14 @@ classifiers=[
     "Programming Language :: Python",
     "Programming Language :: Python :: 3",
     "Programming Language :: Python :: 3 :: Only",
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: 3.14",
+    "Programming Language :: Python :: 3.15",
     "Programming Language :: Python :: Implementation :: CPython",
     "Programming Language :: Python :: Implementation :: PyPy",
     "Topic :: Internet :: WWW/HTTP :: Dynamic Content :: Wiki",