Implement best practice of wrapping errors when "trapping" and "re-throwing" error

In go version 1.13, error wrapping/unwrapping was introduced. Since then it has become a best practice to wrap an error when a function catches and error and passes it on.

Ex:

result, err := pkg.SomeFunction()
if err != nil {
    return err
}

becomes something like

result, err := pkg.SomeFunction()
if err != nil {
    return fmt.Errorf("added context: %w", err)
}