Add support for variable ${workspaceFolderBasename} and config namespace

Visual studio has several predefined variables: https://code.visualstudio.com/docs/editor/variables-reference, which they unfortunately don’t support in settings.json for some reason. Extensions can support them. This Extension does support some of them. But one is I need is missing (it has a different name). It also uses a different namespace: command: instead of config:

I would like support for ${workspaceFolderBasename}. The alternative is workspaceName, but I like to be consistent in my settings.json file. I use ${workspaceFolderBasename} in multiple json files.

Example

{
    "cmake.buildDirectory": "${workspaceFolder}/../build-${workspaceFolderBasename}",
    "testMate.cpp.test.workingDirectory": "${command:cmake.buildDirectory}",
    "testMate.cpp.test.executables": "${command:cmake.buildDirectory}/${workspaceName}_test.exe",
}

I would prefer it like this:

{
    "cmake.buildDirectory": "${workspaceFolder}/../build-${workspaceFolderBasename}",
    "testMate.cpp.test.workingDirectory": "${config:cmake.buildDirectory}",
    "testMate.cpp.test.executables": "${config:cmake.buildDirectory}/${workspaceFolderBasename}_test.exe",
}

Thus I want workspaceFolderBasename supported and I want config: to work too. I use config: notation also in tasks.json and launch.json. For example:

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Debug Nucleo openocd",
            "cwd": "${workspaceFolder}",
            "executable": "${config:cmake.buildDirectory}/${workspaceFolderBasename}.elf",

[matepek]

${workspaceFolderBasename} can be achieved with ${workspaceFolder[-1]}. Config is cool. I’m adding it

[matepek]

I think the command is basically resolved on the cmake extension’s code. VSCode does not provide an api for variable resolution, I can just query the configs. Every extension provide their own resolution. Now I added some recursion but I’m not a fan of it. I wouldn’t suggest you to depend on a lot but you can try out.