Organization needs to have a few first class attributes and tags

[venkatramanm]

Organization kyc attributes are missing:

Organization object does not have :

• date_of_incorporation
• tags (To store registration and tax_ids needed for peer2peer kyc).

Preferred solution
Add first class attributes :

1. date_of_incorporation ,
2. an array of credentials ( to hold registration id , tax_id etc)
3. tags to allow for extensibility.

** Alternate solution **
Just add tags and let network facilitator dictate the tag groups. ( though this is workable, I think creds and date of incorporation must be first class attributes on organization entity)

Additional context
This would be useful in beckn.json feature also. @ravi-prakash-v