feat(control-plane): generate development user for head-less development

[jiparis]

This PR configures the control plane to generate a new user on first bootstrap, and print a valid user token (1 month) in the logs. This way, it can be used in the auth login --skip-browser workflow without needing a GUI.

If enabled, Chainloop logs will print a message like this:

2024-08-27T17:13:39.774+0200    INFO    {"component": "service", "msg": "******************* DEVELOPMENT USER TOKEN *******************"}
2024-08-27T17:13:39.774+0200    INFO    {"component": "service", "msg": "Use chainloop 'auth login --skip-browser' and paste this token to start a headless session: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.REDACTED"}

And then:

> chainloop --insecure auth login --skip-browser
WRN API contacted in insecure mode
WRN Both user credentials and $CHAINLOOP_TOKEN set. Ignoring $CHAINLOOP_TOKEN.
To authenticate, click on the following link and paste the result back here

  http://0.0.0.0:8000/auth/login?long-lived=true

Enter Token:

> chainloop --insecure org ls
WRN API contacted in insecure mode
WRN Both user credentials and $CHAINLOOP_TOKEN set. Ignoring $CHAINLOOP_TOKEN.
you are not part of any organization, please run "chainloop organization create --name ORG_NAME" to create one

Tested building the image locally and and running it with compose.labs.yaml