🔗 feat: User Provided Base URL for OpenAI endpoints (#1919)

* chore: bump browserslist-db@latest

* refactor(EndpointService): simplify with `generateConfig`, utilize optional baseURL for OpenAI-based endpoints, use `isUserProvided` helper fn wherever needed

* refactor(custom/initializeClient): use standardized naming for common variables

* feat: user provided baseURL for openAI-based endpoints

* refactor(custom/initializeClient): re-order operations

* fix: knownendpoints enum definition and add FetchTokenConfig, bump data-provider

* refactor(custom): use tokenKey dependent on userProvided conditions for caching and fetching endpointTokenConfig, anticipate token rates from custom config

* refactor(custom): assure endpointTokenConfig is only accessed from cache if qualifies for fetching

* fix(ci): update tests for initializeClient based on userProvideURL changes

* fix(EndpointService): correct baseURL env var for assistants: `ASSISTANTS_BASE_URL`

* fix: unnecessary run cancellation on res.close() when response.run is completed

* feat(assistants): user provided URL option

* ci: update tests and add test for `assistants` endpoint

* chore: leaner condition for request closing

* chore: more descriptive error message to provide keys again

packages/data-provider/package.json

@@ -1,6 +1,6 @@
 {
   "name": "librechat-data-provider",
-  "version": "0.4.5",
+  "version": "0.4.6",
   "description": "data services for librechat apps",
   "main": "dist/index.js",
   "module": "dist/index.es.js",