Refine type hints for COM object creation and retrieval.

[junkmd]

Summary

This PR focuses type-hint improvements for core COM object creation and retrieval functions.
The goal is solely to enhance static type safety and developer experience within IDEs by providing precise @overload signatures and Literal hints.

Changes

1. Static Type Resolution for Object Creation

• Functions affected: CreateObject, GetActiveObject, CoGetObject
• Focus: Added Literal type hints to the dynamic parameter.

2. Overload Mapping for Interface Specification

• Functions affected: CreateObject, GetActiveObject, GetClassObject, CoGetClassObject, CoCreateInstanceEx
• Focus: Refined @overload signatures to link the interface argument directly to the function's return type in the eyes of static analyzers.

3. Type-Safe Pointers for Low-Level Compatibility

• Functions affected: CreateObject, GetClassObject, CoGetClassObject, CoCreateInstanceEx
• Focus: Expanded the type definition of pServerInfo to include _CArgObject.

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.94%. Comparing base (39cc301) to head (97fb345).
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Additional details and impacted files

@@           Coverage Diff           @@
##             main     #940   +/-   ##
=======================================
  Coverage   88.93%   88.94%           
=======================================
  Files         139      139           
  Lines       13642    13649    +7     
=======================================
+ Hits        12133    12140    +7     
  Misses       1509     1509           

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