Add admin state store, add new role functionality

resources/scripts/state/admin/index.ts

@@ -0,0 +1,16 @@
+import { createContextStore } from 'easy-peasy';
+import { composeWithDevTools } from 'redux-devtools-extension';
+import roles, { AdminRoleStore } from '@/state/admin/roles';
+
+interface AdminStore {
+    roles: AdminRoleStore;
+}
+
+export const AdminContext = createContextStore<AdminStore>({
+    roles,
+}, {
+    compose: composeWithDevTools({
+        name: 'AdminStore',
+        trace: true,
+    }),
+});