Update Lucata documentation to reflect new methods of access and new tools, docs

[jyoung3131]

We need to edit and update the following pages:

https://github.com/gt-crnch-rg/read-the-docs/blob/main/docs/lucata/lucata-getting-started.rst

https://github.com/gt-crnch-rg/read-the-docs/blob/main/docs/lucata/lucata-pathfinder-execution.rst

Note that we have a lot of detail from the programming guide at
https://github.com/gt-crnch-rg/read-the-docs/tree/main/docs/lucata/config_and_running

https://github.com/gt-crnch-rg/read-the-docs/blob/main/docs/general/using-slurm-examples.rst

Advanced debugging information under
https://github.com/gt-crnch-rg/read-the-docs/tree/main/docs/lucata/troubleshooting

Logs are under /var/log/emutechnology/<user> or /var/log/emutechnology/root/emu-scd-system.log for root.

Instructions on how to do multinode checkpointing
https://github.com/gt-crnch-rg/read-the-docs/blob/main/docs/lucata/troubleshooting/diagnosing_problems.md

[jyoung3131]

Both of these pages have been updated to reflect latest guidance and repos.

https://github.com/gt-crnch-rg/read-the-docs/blob/main/docs/lucata/lucata-getting-started.rst
https://github.com/gt-crnch-rg/read-the-docs/blob/main/docs/lucata/lucata-pathfinder-execution.rst