Improve matching stova attendees to existing companies

[DeanElliott96]

Description of change

Previously there was only a check to match on the given company_name from stova. Now it checks company_name first, and if no match it checks the attendees email for a contact match and uses that contacts company.

Currently: 19.65% attendees matched to existing companies

Of all 87310 Stova attendees ingested
17160 attendees were matched to existing companies
70150 attendees were assigned a newly created company from Stova
This created 35751 new companies on Data Hub

With this PR: 54% attendees matched to existing companies

Of all 87310 Stova attendees
47840 attendees would be matched to existing companies
39470 remaining attendees will be assigned a newly created company by Stova
This would create 26228 new companies on Data Hub

Checklist

• Has this branch been rebased on top of the current main branch?
• Is the CircleCI build passing?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.66%. Comparing base (ccdcc91) to head (dbdeb64).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6011      +/-   ##
==========================================
- Coverage   96.67%   96.66%   -0.01%     
==========================================
  Files        1094     1094              
  Lines       25802    25816      +14     
  Branches     1699     1703       +4     
==========================================
+ Hits        24943    24956      +13     
- Misses        700      701       +1     
  Partials      159      159              

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