refactor: now utils is an internal package (#166)

Let us make internal everything because this is not a library.

internal/utils/util_test.go

@@ -0,0 +1,18 @@
+package utils
+
+import (
+	"testing"
+
+	"github.com/fatih/color"
+)
+
+func TestEscapeAwareRuneCountInString(t *testing.T) {
+	var bold = color.New(color.Bold)
+	var myColor = color.New(color.FgBlue)
+
+	s := myColor.Sprintf("•ABC%s%s", bold.Sprintf("DEF"), "\x1B[00;38;5;244m\x1B[m\x1B[00;38;5;33mGHI\x1B[0m")
+	count := EscapeAwareRuneCountInString(s)
+	if count != 10 {
+		t.Errorf("Count was incorrect, got: %d, want: %d.", count, 10)
+	}
+}