tutorial how to run the os in a simulator

Description:
Setting up a simulator with a virtual serial port connected to UART 0 can be challenging, especially for those not using a Windows environment with a GUI such as Simutron. The task requires a detailed, step-by-step tutorial on how to set up simavr in various environments to run the operating system, using Atmega328p and Atmega2560 as examples.

Additionally, a tutorial on setting up simavr as an embedded GDB server in commonly used IDEs and debugging with it would be beneficial. This is particularly important as there is a significant learning curve when transitioning from Arduino IDE to standard C IDE, and Atmel Studio does not sufficiently bridge this gap for beginners.

User Story:
As a developer, I need a comprehensive tutorial on setting up simavr in various environments and using it as an embedded GDB server in popular IDEs, so that I can effectively simulate and debug my applications.