feat: add free-threading classifiers (#195)

* feat: add free-threading classifiers

Signed-off-by: Henry Schreiner <[email protected]>

* refactor: add numbers to force correct sort

* Update __init__.py

---------

Signed-off-by: Henry Schreiner <[email protected]>
Co-authored-by: Dustin Ingram <[email protected]>

Author: henryiii

src/trove_classifiers/__init__.py

@@ -530,6 +530,11 @@
     "Programming Language :: Python :: 3.13",
     "Programming Language :: Python :: 3.14",
     "Programming Language :: Python :: 3.15",
+    "Programming Language :: Python :: Free Threading",
+    "Programming Language :: Python :: Free Threading :: 1 - Unstable",
+    "Programming Language :: Python :: Free Threading :: 2 - Beta",
+    "Programming Language :: Python :: Free Threading :: 3 - Stable",
+    "Programming Language :: Python :: Free Threading :: 4 - Resilient",
     "Programming Language :: Python :: Implementation",
     "Programming Language :: Python :: Implementation :: CPython",
     "Programming Language :: Python :: Implementation :: IronPython",