Added shared credentials for BoardGameGeek

tomk- commented 3 months ago

Overall Checklist

[x] I agree to the project's Developer Certificate of Origin
[x] The top-level JSON objects are sorted alphabetically
[x] There are no open pull requests for the same update

for shared-credentials.json

[x] There's evidence the domains are currently related (SSL certificates, DNS entries, valid links between sites, legal documents etc.)
[x] If using shared, the new group serves login pages on each of the included domains, and those login pages accept accounts from the others. (For example, we wouldn't use a shared association from google.co.il to google.com, because google.co.il redirects to accounts.google.com for sign in.)
[x] If using from and to, the new group, the from domain(s) redirect to the to domain to log in.

Evidence domains are currently related

DNS entries

SSL certificates:

echo | openssl s_client -showcerts -servername bgg.cc -connect bgg.cc:443 2>/dev/null | openssl x509 -inform pem -noout -text
echo | openssl s_client -showcerts -servername boardgamegeek.com -connect boardgamegeek.com:443 2>/dev/null | openssl x509 -inform pem -noout -text
echo | openssl s_client -showcerts -servername rpggeek.com -connect rpggeek.com:443 2>/dev/null | openssl x509 -inform pem -noout -text
echo | openssl s_client -showcerts -servername videogamegeek.com -connect videogamegeek.com:443 2>/dev/null | openssl x509 -inform pem -noout -text