fortify: move flag handling to separate files

Signed-off-by: Ophestra Umiker <cat@ophivana.moe>

version.go

@@ -0,0 +1,24 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+)
+
+var (
+	Version = "impure"
+
+	printVersion bool
+)
+
+func init() {
+	flag.BoolVar(&printVersion, "V", false, "Print version")
+}
+
+func tryVersion() {
+	if printVersion {
+		fmt.Println(Version)
+		os.Exit(0)
+	}
+}