✨ Add OpenAI block

Also migrate credentials to tRPC

Closes #253

packages/models/features/utils.ts

@@ -2,12 +2,6 @@ import { z } from 'zod'
 
 export type IdMap<T> = { [id: string]: T }
 
-export const schemaForType =
-  <T>() =>
-  <S extends z.ZodType<T, any, any>>(arg: S) => {
-    return arg
-  }
-
 export const variableStringSchema = z.custom<`{{${string}}}`>((val) =>
   /^{{.+}}$/g.test(val as string)
 )