修复了大量存在的问题，增加了假鸭子类型等等机制

Test/ForAndLoopTest/temp/9163064cf3eb88f4.pyi

@@ -0,0 +1,35 @@
+"""
+Auto-generated Python stub file from _fakeduck.py
+Module: _fakeduck
+"""
+
+import c
+
+
+import t
+import mbuddy
+import string
+
+class _Type:
+    def type_id(self: _Type) -> int: pass
+class _str:
+    __requires__: list[str] = ['__mbuddy__']
+    __data__: str
+    __mbuddy__: mbuddy.MBuddy | t.CPtr
+    def b(self: _str) -> int: pass
+    def SELF(self: _str) -> str: pass
+    def upper(self: _str) -> str: pass
+    def lower(self: _str) -> str: pass
+    def capitalize(self: _str) -> str: pass
+    def swapcase(self: _str) -> str: pass
+    def title(self: _str) -> str: pass
+    def casefold(self: _str) -> str: pass
+    def isupper(self: _str) -> int: pass
+    def islower(self: _str) -> int: pass
+    def isalpha(self: _str) -> int: pass
+    def isdigit(self: _str) -> int: pass
+    def isalnum(self: _str) -> int: pass
+    def isspace(self: _str) -> int: pass
+    def isascii(self: _str) -> int: pass
+    def istitle(self: _str) -> int: pass
+    def split(self: _str, delimiter: str) -> list[str]: pass