Add auto to themes

Author: 5yutan5

qdarktheme/_resources/__init__.py

@@ -12,4 +12,4 @@
 from qdarktheme._resources._svg import SVG_RESOURCES
 from qdarktheme._resources._template_stylesheet import TEMPLATE_STYLESHEET
 
-THEMES = ("dark", "light")
+THEMES = ("dark", "light", "auto")

tools/build_styles/_main.py

@@ -38,6 +38,8 @@ def _remove_qss_comment(stylesheet: str) -> str:
 
 
 def _mk_root_init_file(output: Path, themes: list[str], doc_string: str) -> None:
+    themes.append("auto")
+
     code = f"{doc_string}\n"
     code += "from qdarktheme._resources._color_values import COLOR_VALUES\n"
     code += "from qdarktheme._resources._palette import mk_q_palette\n"