Update Stellar ETL Airflow to use case statements

[hunterpack]

There are instances where we can change our code to use features in Python 3.11 that will simplify the code and adhere to best practices. We can take a look at the repo to see anywhere the code can be condensed/improved.

nit: Just a suggestion but you make this into a case statement cause I think we're on like python 3.11 or something

match command_type:
  case "seed":
    # do stuff
  case "build":
    # do other stuff
  case _:
    # throw some error

This change is optional. You can update it in this PR or create a github issue for it and throw it into our backlog

Originally posted by @chowbao in #643 (comment)