Optional initial command string for launch command

[Shivaji-Dhepale]

This PR introduces Optional initial command string for launch command the Ringlogger viewer command system:

Command string can be as follows: Ringlogger.viewer("a application1")

Optional initial command string for launch command: This enhancement adds Optional initial command support for launch command.

Testing: Conducted manual testing to validate the functionality of the launch command with newly optional string support, ensuring backward compatibility. command:

Response:

[Shivaji-Dhepale]

Hi @fhunleth , As requested, I have created a separate PR for the Optional initial command string for launch command. Please provide your suggestions.