chore: add Python version classifiers to fix PyPI version badge (#32)

* Initial plan

* Add Python version classifiers to fix PyPI badge

Co-authored-by: deviantintegral <255023+deviantintegral@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: deviantintegral <255023+deviantintegral@users.noreply.github.com>

Author: Copilot

pyproject.toml

@@ -9,6 +9,10 @@ description = "Async Python library for controlling Dimplex, Faber, and Real Fla
 readme = "README.md"
 license = "Apache-2.0"
 requires-python = ">=3.13"
+classifiers = [
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.13",
+]
 dependencies = [
     "aiohttp>=3.13.3",
     "msal>=1.34.0",