add support for elisp scripts

lxc/execute

@@ -87,6 +87,9 @@ case "$lang" in
 "rust")
     bin=rust
     ;;
+"elisp" | "el")
+    bin=emacs
+    ;;
 "bash")
     bin=bash
     ;;

lxc/executors/emacs

@@ -0,0 +1,2 @@
+cd /tmp/$2
+runuser -l runner$1 -c "cd /tmp/$2 ; cat args.args | xargs -d '\n' timeout -s KILL 3 emacs -Q --script code.code"

tests/test.el

@@ -0,0 +1 @@
+(message "good")