Implement provider formatting improvements and fix client-side compatibility

- Add PROVIDER_INFO metadata to each provider file with proper display names
- Create centralized PROVIDER_METADATA in index.ts for consistent reference
- Update settings UI to use provider metadata for display names
- Fix client/server compatibility for Node.js modules in config.ts

src/lib/providers/ollama.ts

@@ -1,6 +1,11 @@
 import axios from 'axios';
 import { getKeepAlive, getOllamaApiEndpoint } from '../config';
 import { ChatModel, EmbeddingModel } from '.';
+
+export const PROVIDER_INFO = {
+  key: 'ollama',
+  displayName: 'Ollama'
+};
 import { ChatOllama } from '@langchain/community/chat_models/ollama';
 import { OllamaEmbeddings } from '@langchain/community/embeddings/ollama';