Add company settings and number sequence API routes

- Add CompanySetting routes (list, get, set) backed by company-scoped store
- Add Number routes (list, update) for managing number sequences
- Register new store namespaces for numbers and companysetting
- Add CompanySetting and NumberSequence schemas to OpenAPI
- Regenerate API docs and index for the new routes

src/db/numbers.js

@@ -0,0 +1,11 @@
+import { getStore } from './store.js';
+
+export async function list(googleAuthId) {
+    const store = await getStore();
+    return store.numbers.list(googleAuthId);
+}
+
+export async function update(googleAuthId, id, input) {
+    const store = await getStore();
+    return store.numbers.update(googleAuthId, id, input);
+}