Semantic colorization should distinguish between declaration and use

Type: LanguageService

• OS and Version: Linux 5.9.X
• VS Code Version: 1.48.0
• C/C++ Extension Version: 0.30.0-insiders3
• Other extensions you installed (and if the issue persists after disabling them): None related to C/C++
• Does this issue involve using SSH remote to run the extension on a remote machine?: No

I got myself wanting in my theme to give a color only to the parameter definition of functions while it's usage continuing to be colored the same way as any variable. I could my wanted results with Rust, Java and TypeScript because in the functions definitions the parameters receive a modifiers (definition/decleration or something similar)

Steps to reproduce

1. Write a function definition that takes parameters in C/C++
2. Open Inspect Editor Tokens and Scopes
3. Check the token for the parameter in the function definiton and it's header
4. See that in the definitions there is no modifier

Example
In this image, in the function definition the parameter doesn't have a modifier

This image show the usage. Here it's "correct", only parameter, without modifier

Expected behavior
The parameter in the function definition having a modifier.

Java example

Start in the LanguageService area of the C/C++ extension and reproduce the issue with a C/C++ function definition and parameter use. Inspect both tokens with VS Code's Inspect Editor Tokens and Scopes; done means parameters in definitions receive a declaration or definition modifier while their uses retain the parameter token.