refactor: add import maps for generated code

- Add export mappings in @fileone/convex package.json for cleaner imports
- Map @fileone/convex/dataModel to _generated/dataModel.d.ts
- Map @fileone/convex/api to _generated/api.js
- Map @fileone/convex/server to _generated/server.js
- Update all imports across packages/convex and apps/drive-web
- Maintain backward compatibility with _generated/* exports

Co-authored-by: Ona <no-reply@ona.com>

packages/convex/auth.ts

@@ -1,8 +1,8 @@
 import { createClient, type GenericCtx } from "@convex-dev/better-auth"
 import { convex, crossDomain } from "@convex-dev/better-auth/plugins"
 import { betterAuth } from "better-auth"
-import { components } from "./_generated/api"
-import type { DataModel } from "./_generated/dataModel"
+import { components } from "@fileone/convex/api"
+import type { DataModel } from "@fileone/convex/dataModel"
 import authSchema from "./betterauth/schema"
 
 const siteUrl = process.env.SITE_URL!