Stub new function configs.Navigate

This function will navigate the filesystem scraping the fs
searching for config files. It will search in $pwd navigating
through parent folders stopping at $root

configs/navigate.go

+package configs
+
+func Navigate(root, pwd string) Configuration {
+	return Configuration{}
+}

configs/navigate_test.go

+package configs_test
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestNavigate(t *testing.T) {
+	type args struct {
+		root string
+		pwd  string
+	}
+	tests := []struct {
+		name string
+		args args
+		want Configuration
+	}{
+		// TODO: Add test cases.
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := Navigate(tt.args.root, tt.args.pwd); !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("Navigate() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}