Feature Request : evaluate variable in `executablePath` configuration

[pinage404]

Context

Set executablePath configuration with string that use variable

vsc-prolog/README.md

Line 223 in 3fab7b5

* "prolog.executablePath": "/usr/bin/swipl"

{
    "prolog.executablePath": "${workspaceFolder}/.devbox/nix/profile/default/bin/swipl",
    // also tried with the same result
    // "prolog.executablePath": "${env:DEVBOX_PACKAGES_DIR}/bin/swipl",
    // "prolog.executablePath": ".devbox/nix/profile/default/bin/swipl",
}

Current behavior

Cannot lint the prolog file. The Prolog executable was not found. Use the 'prolog.executablePath' setting to configure

Expected behavior

Evaluate variable like VSCode does

https://code.visualstudio.com/docs/editor/variables-reference

Workaround solutions

Settings the path with an absolute path which is not great to share the file