[Feature Request]: Run init on node startup

[smuu]

Implementation ideas

Instead of requiring to run init before running start, automatically run the init when starting the node.

As init only performs something when the node is not already initialized, it will not break anything when running init at any time.

When this is implemented, we can remote the custom init in the entrypoing.sh. Ref.: #2254

[ramin]

i like this, i'd suggest also adding a flag to --skip-init for the fringe case we want to preserve ability to run start without init, for whatever reason

[ramin]

from rene: celestia light run