Implemented Custom role and permissions (#237)

* Implemented Custom role and permissions

* converted Permissions interface into a class

* formatting fix

src/enums/organizationUserType.ts

@@ -3,4 +3,5 @@ export enum OrganizationUserType {
     Admin = 1,
     User = 2,
     Manager = 3,
+    Custom = 4,
 }

src/enums/permissions.ts

@@ -0,0 +1,12 @@
+export enum Permissions {
+    AccessBusinessPortal,
+    AccessEventLogs,
+    AccessImportExport,
+    AccessReports,
+    ManageAllCollections,
+    ManageAssignedCollections,
+    ManageGroups,
+    ManageOrganization,
+    ManagePolicies,
+    ManageUsers,
+}