Separate msgs and srvs into a Dedicated Package

[mlogoth]

Description:
Currently, the msgs and srvs are defined within the main package, which can lead to circular dependencies and complicate the build process. As a best practice in ROS development, message and service definitions should be placed in a separate package (e.g., roboteq_motor_controller_driver_msgs) to improve modularity and maintainability.

Suggested Changes:

• Create a new package (e.g., roboteq_motor_controller_driver_msgs) to house all message and service definitions.

• Update dependencies in the CMakeLists.txt and package.xml files of the main package to depend on roboteq_motor_controller_driver_msgs instead of defining messages and services internally.

• Refactor the code to use the new message and service package.

• Update documentation to reflect the changes.

Benefits:

• Avoids circular dependencies, making package management more robust.

• Enhances modularity, allowing other packages to use the messages/services independently.

• Simplifies future maintenance and upgrades.