implement new invitation system

* fix comments on the frontend
* move jwt token service to its own module
* other fixes and updates

apps/server/src/core/casl/abilities/casl-ability.factory.ts

@@ -11,7 +11,6 @@ import { User, Workspace } from '@docmost/db/types/entity.types';
 
 export type Subjects =
   | 'Workspace'
-  | 'WorkspaceInvitation'
   | 'Space'
   | 'SpaceMember'
   | 'Group'
@@ -36,8 +35,6 @@ export default class CaslAbilityFactory {
       can([Action.Manage], 'Workspace');
       can([Action.Manage], 'WorkspaceUser');
 
-      can([Action.Manage], 'WorkspaceInvitation');
-
       // Groups
       can([Action.Manage], 'Group');
       can([Action.Manage], 'GroupUser');