Implement getResources on client side

[Xenius97]

This PR enables the usage of the getResources() function on the client side as well.
Currently, the only way to list resources on the client is through workarounds for example, manually writing every resource name into a Lua table and iterating over them using getResourceFromName.
This change provides a simpler and more transparent method, primarily useful for debugging purposes.

addCommandHandler("c_listresources", function()
    for i, res in ipairs(getResources()) do
        outputChatBox(i .. ": " .. getResourceName(res))
    end
end)

Important

This only lists resources that are running on the client side.