✨ Add OpenAI block

Also migrate credentials to tRPC

Closes #253

apps/viewer/src/features/blocks/integrations/openai/executeOpenAIBlock.ts

@@ -0,0 +1,20 @@
+import { ExecuteIntegrationResponse } from '@/features/chat/types'
+import { SessionState } from 'models'
+import { OpenAIBlock } from 'models/features/blocks/integrations/openai'
+import { createChatCompletionOpenAI } from './createChatCompletionOpenAI'
+
+export const executeOpenAIBlock = async (
+  state: SessionState,
+  block: OpenAIBlock
+): Promise<ExecuteIntegrationResponse> => {
+  switch (block.options.task) {
+    case 'Create chat completion':
+      return createChatCompletionOpenAI(state, {
+        options: block.options,
+        outgoingEdgeId: block.outgoingEdgeId,
+      })
+    case 'Create image':
+    case undefined:
+      return { outgoingEdgeId: block.outgoingEdgeId }
+  }
+}