修复了大量存在的问题，增加了假鸭子类型等等机制

Test/StringTest/temp/39178dc5ba692b92.pyi

@@ -0,0 +1,31 @@
+"""
+Auto-generated Python stub file from main.py
+Module: main
+"""
+
+import c
+
+
+import t
+import stdio
+import string
+import testcheck
+
+def test_strlen() -> t.CInt: pass
+
+def test_strcpy() -> t.CInt: pass
+
+def test_strcat() -> t.CInt: pass
+
+def test_strcmp() -> t.CInt: pass
+
+def test_strncpy() -> t.CInt: pass
+
+def test_char_access() -> t.CInt: pass
+
+def test_snprintf() -> t.CInt: pass
+
+
+import w32.win32memory
+
+def main() -> t.CInt: pass