[Bug/Deprecation] explore.py is broken - might need to either be refactored or deprecated in favor of other methods to explore configs

[pkundurthy]

We do not see much utility for explore.py as a way to manage and explore meta data related to Chronon configs.
Internally at airbnb, we are logging and displaying metadata via a process which loads data into a metastore, and a UI which queries and displays config details.

In addition, we see that explore.py is often broken when trying to do company-wide searches due various custom config settings:

MacBook-Pro]$ explore.py pricing                                         
Traceback (most recent call last):
  File "/Users/garima_agarwal2/.pyenv/versions/3.10.13/bin/explore.py", line 377, in <module>
    enrich_with_joins(gb_index, join_index, root=root, teams=teams)
  File "/Users/garima_agarwal2/.pyenv/versions/3.10.13/bin/explore.py", line 272, in enrich_with_joins
    gb_index[entry["name"][0]] = entry
TypeError: 'NoneType' object is not subscriptable