Adding Cobra and Viper, restructuring project, and improving code using goroutines

[kaveh-ahangar]

• Added Cobra and Viper for CLI and config loading. This will make it easier to manage configuration files and command-line options.
• Restructured the project to make it more modular and organized. This will make it easier to maintain and update the code in the future.
• Improved the code by using goroutines to make it more concurrent and efficient. This should result in better performance and scalability.

I've thoroughly tested the code and it's ready to be merged into the main branch.