add map

src/utils/strings.py

@@ -0,0 +1,10 @@
+def to_snake_case(name: str) -> str:
+    """将驼峰/帕斯卡命名转换为蛇形命名。"""
+    chars = []
+    for i, ch in enumerate(name):
+        if ch.isupper() and i > 0:
+            chars.append('_')
+        chars.append(ch.lower())
+    return ''.join(chars)
+
+