[GoodID] register to redtent

[sirpy]

add an api endpoint goodid/redtent to register a user to the redtent pool

• no auth required for endpoint
• input in post body credentials, videoFilename
• verify credentials are valid (ie signed by us)
• verify user has uniqueness credential
• verify all credentials issued to same account
• verify user location + gender from credentials are valid for redtent
• verify videoFilename equal {account}.{ext} and exists on our redtent bucket
• if all valid call multiwallet registerRedtent(account)
• if not valid return response with http error