Clarification on Configuration Names and Cli params for Built-in and External NATS in Marmot

[mrchypark]

Thank you for creating Marmot. The built-in NATS functionality, in particular, has been a significant factor in adopting Marmot. However, it seems challenging to discern whether the settings are for built-in NATS, external NATS, or the configurations required by Marmot to use NATS. It would be beneficial if the names of the settings were more explicit.