[clang] [libclang/python] Add type annotations for code completion classes (PR #140539)

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github-actions[bot] wrote:

<!--LLVM CODE FORMAT COMMENT: {darker}-->


:warning: Python code formatter, darker found issues in your code. :warning:

<details>
<summary>
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``````````bash
darker --check --diff -r HEAD~1...HEAD clang/bindings/python/clang/cindex.py
``````````

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<details>
<summary>
View the diff from darker here.
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``````````diff
--- cindex.py	2025-05-19 13:23:14.000000 +0000
+++ cindex.py	2025-05-19 13:25:13.667147 +0000
@@ -2961,11 +2961,10 @@
 }
 
 
 class CompletionChunk:
     class Kind:
-
         def __init__(self, name: str):
             self.name = name
 
         def __str__(self) -> str:
             return self.name
@@ -3053,11 +3052,10 @@
 }
 
 
 class CompletionString(ClangObject):
     class Availability:
-
         def __init__(self, name):
             self.name = name
 
         def __str__(self):
             return self.name
@@ -3147,11 +3145,10 @@
 
         return self.results[key]
 
 
 class CodeCompletionResults(ClangObject):
-
     def __init__(self, ptr: _Pointer[CCRStructure]):
         assert isinstance(ptr, POINTER(CCRStructure)) and ptr
         self.ptr = self._as_parameter_ = ptr
 
     def from_param(self) -> _Pointer[CCRStructure]:

``````````

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https://github.com/llvm/llvm-project/pull/140539