✨ Add "Generate variables" actions in AI blocks

Closes #1586

packages/forge/blocks/openai/helpers/fetchModels.ts

@@ -0,0 +1,40 @@
+import OpenAI, { ClientOptions } from 'openai'
+import { defaultOpenAIOptions } from '../constants'
+
+type Props = {
+  apiKey?: string
+  baseUrl?: string
+  apiVersion?: string
+}
+
+export const fetchGPTModels = async ({
+  apiKey,
+  baseUrl = defaultOpenAIOptions.baseUrl,
+  apiVersion,
+}: Props) => {
+  if (!apiKey) return []
+
+  const config = {
+    apiKey: apiKey,
+    baseURL: baseUrl ?? defaultOpenAIOptions.baseUrl,
+    defaultHeaders: {
+      'api-key': apiKey,
+    },
+    defaultQuery: apiVersion
+      ? {
+          'api-version': apiVersion,
+        }
+      : undefined,
+  } satisfies ClientOptions
+
+  const openai = new OpenAI(config)
+
+  const models = await openai.models.list()
+
+  return (
+    models.data
+      .filter((model) => model.id.includes('gpt'))
+      .sort((a, b) => b.created - a.created)
+      .map((model) => model.id) ?? []
+  )
+}