Add Cloudflare AI provider support and enhance connection management

- Introduced Cloudflare AI as a new provider with specific configurations in providerModels.js and providers.js.
- Updated DefaultExecutor to handle account ID resolution for Cloudflare AI connections.
- Enhanced AddApiKeyModal and EditConnectionModal to include account ID input for Cloudflare AI.
- Implemented validation for Cloudflare AI API key connections in testUtils.js and route.js.
- Updated UI components to reflect changes in provider management and connection handling.

open-sse/config/providers.js

@@ -367,6 +367,11 @@ export const PROVIDERS = {
     format: "openai",
     headers: {}
   },
+  // Cloudflare Workers AI - {accountId} resolved from credentials.providerSpecificData.accountId
+  "cloudflare-ai": {
+    baseUrl: "https://api.cloudflare.com/client/v4/accounts/{accountId}/ai/v1/chat/completions",
+    format: "openai"
+  },
 };
 
 export const OLLAMA_LOCAL_DEFAULT_HOST = "http://localhost:11434";