Add Turtlesim Demo

[Abdelrahmanosama372]

Description

This PR introduces the Turtlesim demo in Rust, providing a Rust implementation of the turtlesim simulation. This PR addresses issue [#124]

Key Features:

• turtlesim_rs: A Rust-based implementation of the turtlesim simulator, providing a complete ROS 2 integration for visualizing and controlling turtles. This package includes the core simulation logic, turtle control, and rendering components, ported from the C++ turtlesim package.
• turtlesim_rs_msgs: Added the necessary message types and services to support the turtlesim_rs simulator.

Tutorials:

Here’s a checklist of the tutorials included and upcoming:

• ✅ turtle_teleop_key: Control the turtle using keyboard input.
• ✅ mimic: Mimic the movements of one turtle in another.
• ⬜ draw_square: Program a turtle to draw a square.

What's Next:

• Add the mimic and draw_square tutorials.