TextLabel Concatenation (operator+ and operator+=)

You are building UI labels that have a prefix and main text.

Create a class TextLabel that stores TWO strings: prefix and text.

Rules:
- getText() should return prefix + text
- When combining labels, you should combine BOTH parts.

Requirements:
1) Constructor TextLabel(string prefix, string text)
2) string getText() const
3) operator+= appends other.prefix to this->prefix AND other.text to this->text
4) operator+ returns a NEW TextLabel using operator+=

Do NOT write a main function.