Show C++ default parameter values in IntelliSense hover

[slilly-0xffff]

Feature Request

Feature request:
When hovering over a C++ function, please include default parameter values in the signature shown in the tooltip. This is especially helpful when working with overloaded or optional parameters defined in headers.

Why this matters:
Default values are often only visible in the header, not the definition. It would greatly improve developer workflow if IntelliSense showed them directly in the hover popup, without needing to peek or navigate to the declaration manually.

Environment:

• VSCode version: 1.100.0
• C/C++ extension version: 1.25.3
• OS: Windows 11