Expose s:workspace to consumers

[Smaug123]

It would be nice to be able to read Ionide's state - e.g. I want to bind a command to "build everything", which is essentially "list all projects, shell-escape, concat with " ", and dotnet build the result".

[Smaug123]

(OK, apparently in instance 3381942 of "msbuild and/or the dotnet CLI is buggy and/or inconsistent", you can't build multiple targets at once from the command line. But the principle stands.)

[baronfel]

I completely forgot that this feature was requested - I'll ping the team and see what they think. I think it makes sense to enable given that the MSBuild APIs support it

[Smaug123]

By the way, this is the Massive Hack I'm currently using to get the loaded projects from Ionide:

-- MASSIVE HACK - raised https://github.com/ionide/Ionide-vim/pull/78
local function captureLoadedProjects()
    vim.fn.execute('redir => g:massive_hack_patrick_capture')
    vim.fn.execute('call fsharp#showLoadedProjects()')
    vim.fn.execute('redir END')
    local output = vim.fn.eval('g:massive_hack_patrick_capture')

    local projects = {}

    for line in output:gmatch("[^\r\n]+") do
        local project = line:gsub("^%s*-%s*", "")
        table.insert(projects, project)
    end

    return projects
end