pkgs/factorio-launcher: Add wrapper to launch factorio

pkgs/factorio-launcher/launch-factorio.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+if [[ $# -eq 0 ]]; then
+	echo "Pass path to factorio install directory as first argument"
+	exit 1
+fi
+
+FACTORIO_BINARY_PATH=""
+
+for suffix in "" "/factorio" "/x64/factorio" "/bin/x64/factorio" "/factorio/bin/x64/factorio"; do
+	if [[ -f "$1${suffix}" && -x "$1${suffix}" ]]; then
+		FACTORIO_BINARY_PATH="$1${suffix}"
+		break
+	fi
+done
+
+if [[ -z $FACTORIO_BINARY_PATH ]]; then
+	echo "No factorio executable found below $1"
+	exit 1
+fi
+
+shift
+
+set -- "${FACTORIO_BINARY_PATH}" "$@"
+
+exec "$@"