[Feature] Support ${workspaceFolder} / relative paths in cmake.exclude for multi-root workspaces

[bezmozachen]

Request Overview

cmake.exclude in CMake Tools (v1.22.20) only accepts absolute paths.
Variable paths such as ${workspaceFolder} / ${workspaceFolder:Name} and relative paths are not resolved, so excluded folders are still treated as CMake projects.

This prevents using cmake.exclude in shared or portable workspaces.

Request:
Add support for ${workspaceFolder} and relative paths in cmake.exclude.

Reference: PR #4440.

Additional Information

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