* INFRA-2866 | added APIs to get product for user and to get asigner and responder teams
* INFRA-2866 | added create-incident-v3 API
* INFRA-2866 | migration script to fill team_severity, team_user and team_user_severity tables
* INFRA-2866 | adding team severity users upon team and severity update
* INFRA-2866 | using update team v2 in slack action
* INFRA-2866 | update product flow
* INFRA-2866 | fixed user not invited issue
* INFRA-2866 | updated API paths
* INFRA-2866 | using constant for header fetching
* INFRA-2866 | PR review changes