Update Vendure provider to latest API changes (#352)

Relates to #349

framework/vendure/api/operations/get-page.ts

@@ -0,0 +1,45 @@
+import { VendureConfig, Provider } from '../'
+import { OperationContext } from '@commerce/api/operations'
+
+export type Page = any
+
+export type GetPageResult<T extends { page?: any } = { page?: Page }> = T
+
+export type PageVariables = {
+  id: number
+}
+
+export default function getPageOperation({
+  commerce,
+}: OperationContext<Provider>) {
+  async function getPage(opts: {
+    url?: string
+    variables: PageVariables
+    config?: Partial<VendureConfig>
+    preview?: boolean
+  }): Promise<GetPageResult>
+
+  async function getPage<T extends { page?: any }, V = any>(opts: {
+    url: string
+    variables: V
+    config?: Partial<VendureConfig>
+    preview?: boolean
+  }): Promise<GetPageResult<T>>
+
+  async function getPage({
+    url,
+    variables,
+    config: cfg,
+    preview,
+  }: {
+    url?: string
+    variables: PageVariables
+    config?: Partial<VendureConfig>
+    preview?: boolean
+  }): Promise<GetPageResult> {
+    const config = commerce.getConfig(cfg)
+    return {}
+  }
+
+  return getPage
+}