Added unit tests and workflow call for same

functions/flagcheck.go

@@ -0,0 +1,15 @@
+package functions
+
+import (
+	"flag"
+)
+
+func FlagSet(name string) (found bool) {
+	found = false
+	flag.Visit(func (f *flag.Flag) {
+		if f.Name == name {
+			found = true
+		}
+	})
+	return 
+}