refactor: Rename AppAuthClient model as OAuthClient

packages/backend/test/mocks/rest/api/v1/apps/get-oauth-clients.js

@@ -0,0 +1,18 @@
+const getOAuthClientsMock = (oauthClients) => {
+  return {
+    data: oauthClients.map((oauthClient) => ({
+      name: oauthClient.name,
+      id: oauthClient.id,
+      active: oauthClient.active,
+    })),
+    meta: {
+      count: oauthClients.length,
+      currentPage: null,
+      isArray: true,
+      totalPages: null,
+      type: 'OAuthClient',
+    },
+  };
+};
+
+export default getOAuthClientsMock;