* Rewrite of rosetta dockerfile
This close to a full rewrite of the built image.
- runit is removed
- `/entrypoint.sh` now starts all processes via single script
- all logs are piped to stdout
- remove printf in favor of heredoc
- add a script to seed the chainstate when env var `SEED_CHAINSTATE=true`
- adds a postgres init script in case of genesis sync and DB != `postgres`
* chore - address PR comments
updating docs where stx-rosetta is used
add some docs around `SEED_CHAINSTATE`
add -W to pg_ctl and removing sleep
