feat: myvnc as nix module

cluster/compute/myvnc.nix

@@ -1,24 +0,0 @@
-{ pkgs }:
-pkgs.writeScriptBin "myvnc" ''
-    #!${pkgs.runtimeShell}
-
-    uid=`id -u`
-    port=$((9000+$uid))
-    shell=`getent passwd $(id -un) | awk -F : '{print $NF}'`
-    # vnc=${pkgs.tigervnc}/bin/vncserver
-    vnc=/nix/store/czp2b60dwk75widi8y287hr0xx1wgv2a-tigervnc-1.10.1/bin/vncserver
-
-    case $1 in
-    -p|--port) shift; port=$1 ;;
-    kill|stop)
-        display=$($vnc -list | sed  -n 's/^\(:[0-9]\+\).*/\1/p'| head -1)
-        $vnc -kill $display
-        exit 0
-        ;;
-    esac
-    ps ax | sed '/grep/d' | grep "Xvnc.*-rfbport $port" >/dev/null 2>&1
-    [ $? = 1 ] && $vnc -rfbport $port
-    echo "Xvnc server is running on port $port."
-    exec $shell -i
-  ''
-