Support for drupal data sync

[jmcarson]

Add audit code and management command for syncing user, research center and partner group data from the gregor drupal site to the gregor django site.

[codecov]

Codecov Report

Attention: Patch coverage is 99.44506% with 5 lines in your changes missing coverage. Please review.

Project coverage is 94.89%. Comparing base (42b5669) to head (a579a3f).
Report is 22 commits behind head on main.

Files	Patch %	Lines
gregor_django/gregor_anvil/audit.py	86.11%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #617      +/-   ##
==========================================
+ Coverage   94.18%   94.89%   +0.71%     
==========================================
  Files         124      130       +6     
  Lines        5693     6588     +895     
==========================================
+ Hits         5362     6252     +890     
- Misses        331      336       +5     

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[amstilp]

@jmcarson I added a "member_group" and "uploader_group" fields to the ResearchCenter and PartnerGroup models. When importing new RC/PartnerGroups, you can leave them blank. When updating existing records, don't change the member/upload groups that are already associated (if any).

[amstilp]

@jmcarson I also want to verify that we'll get an email whenever a ResearchCenter or PartnerGroup is added or updated. Can you check if that's the case, and if not, add it?