Add basic ruby shell to dev shells

shells/basic-ruby.nix

@@ -0,0 +1,15 @@
+{ pkgs, inputs, ... }:
+pkgs.devshell.mkShell {
+  name = "Basic ruby project";
+  imports = [ "${inputs.devshell}/extra/language/ruby.nix" ];
+  packages = with pkgs; [
+    nodejs
+    nodePackages.typescript-language-server
+    rubyPackages_3_3.solargraph
+    yarn
+  ];
+  language.ruby = {
+    package = pkgs.ruby_3_3;
+    nativeDeps = [ pkgs.zlib pkgs.libffi pkgs.libyaml ];
+  };
+}