* feat: introduce user_role table
* fix: golint and register migrations
* fix: user types and order of update user
* feat: add migration to drop role column from users table
* fix: raw queries pointing to role column in users table
* chore: remove storable user struct and minor other changes
* chore: remove refs of calling vars as storable users
* chore: user 0th role instead of highest
* chore: address pr comments
* chore: rename userrolestore to user_role_store
* chore: return userroles with user in getter where possible
* chore: move user module as user setter
* chore: arrange getter and setter methods
* fix: nil pointer for update user in integration test due to half payload being passed
* chore: update openapi specs
* fix: nil errors without making frontend changes
* fix: empty array check everywhere for user roles array and minor other changes
* fix: imports
* fix: rebase changes
* chore: renaming functions
* chore: simplified getorcreateuser user setter method and call sites
* fix: golint
* fix: remove redundant authz migration, remove fk enforcement for drop migration
* fix: add new event for user activation
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