feat: add Ollama Cloud quota provider (#544)

* feat: add Ollama Cloud quota provider

Adds ollama-cloud quota provider that reads auth cookie from
~/.config/ollama-quota/cookie and fetches usage from ollama.com/settings.
Returns 3 windows: session, weekly, and premium (X/Y). Reuses Ollama
logo via provider alias.

* docs(quota): add ollama-cloud provider entry to DOCUMENTATION.md

packages/web/server/lib/quota/index.js

@@ -19,5 +19,6 @@ export {
   fetchZaiQuota,
   fetchNanoGptQuota,
   fetchMinimaxCodingPlanQuota,
-  fetchMinimaxCnCodingPlanQuota
+  fetchMinimaxCnCodingPlanQuota,
+  fetchOllamaCloudQuota
 } from './providers/index.js';