Add Emacs desktop provisioning and dev toolchain packages

Install Emacs and copy the desktop .emacs.d config so the editor setup is managed with the rest of desktop dotfiles. Add vterm/build/debug dependencies plus C/C++ and Go tooling needed by the configured workflow.

dotfiles/desktop/.emacs.d/snippets/sh-mode/cmd

@@ -0,0 +1,18 @@
+#name : cmd
+# --
+#! /usr/bin/env bash
+
+## author: torstein, torstein@skybert.net
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+main() {
+  :
+}
+
+main "$@"
+
+
+