Add a simple URL shortener

[CodeDrinks270]

Description:

Implement a basic Python script that shortens long URLs using the pyshorteners library (TinyURL service). This feature allows users to input a URL and receive a shortened version that can be easily shared or used elsewhere.

Goals / Acceptance Criteria:

• Install and use the pyshorteners library.
• Accept user input (a long URL) via console.
• Generate and print the shortened URL using TinyURL.
• Handle invalid URLs gracefully (optional).
• Include basic documentation or inline comments explaining the code.