[FEAT]: Enable multi-user on boot

[ajferrario]

What would you like to see?

As an anythingllm administrator attempting to deploy a number of anythingllm environments, I currently need to set the admin username and password for the initial Admin user in each environment manually before I can create the API key and use the API to configure the needed users, workspaces and other features for that environment.

I'd like to have a fully-automated and hands-off deployment option, and this is one of the main manual steps blocking me from achieving this.

I will file other issues for a couple other things needed for fully-automated deployments.

[ajferrario]

@timothyasp if you'd prefer I'll rename this to enable automated deployment for multi-user environments. I wasn't sure how much content you would like in one FR so I started it out at a granular level.

[timothycarambat]

If anything, in my mind this request makes sense as just one FR, because they are all really close in scope since if we enable multi-user on boot you probably also want to make users and such - let's just keep it one issue for now and if scope grows then we can break it out where it makes sense 👍