feat(next-drupal)!: add App Router support for Server Components

Fixes #442

BREAKING CHANGE:

The useMenu() client hook has moved out of the main entry point and into its own
entry point. Any import or require of that function needs to be updated:

Old usage:
```js
import { useMenu } from "next-drupal"
```

New usage:
```js
import { useMenu } from "next-drupal/navigation"
```

packages/next-drupal/package.json

@@ -3,7 +3,10 @@
   "description": "Helpers for Next.js + Drupal.",
   "version": "1.6.0",
   "sideEffects": false,
-  "source": "src/index.ts",
+  "source": [
+    "src/index.ts",
+    "src/navigation.ts"
+  ],
   "type": "module",
   "main": "dist/index.cjs",
   "module": "dist/index.modern.js",
@@ -17,6 +20,16 @@
         "types": "./dist/index.d.cts",
         "default": "./dist/index.cjs"
       }
+    },
+    "./navigation": {
+      "import": {
+        "types": "./dist/navigation.d.ts",
+        "default": "./dist/navigation.modern.js"
+      },
+      "require": {
+        "types": "./dist/navigation.d.cts",
+        "default": "./dist/navigation.cjs"
+      }
     }
   },
   "types": "dist/index.d.ts",

packages/next-drupal/src/index.ts

@@ -8,7 +8,6 @@ export * from "./get-resource"
 export * from "./get-search-index"
 export * from "./get-view"
 export * from "./types"
-export * from "./use-menu"
 export * from "./translate-path"
 export {
   deserialize,

packages/next-drupal/src/navigation.ts

@@ -0,0 +1 @@
+export { useMenu } from "./navigation/use-menu"

packages/next-drupal/src/use-menu.tsx → packages/next-drupal/src/navigation/use-menu.tsx

@@ -1,7 +1,7 @@
 import { useRouter } from "next/router"
 import { useEffect, useState } from "react"
-import { getMenu } from "./get-menu"
-import type { DrupalMenuLinkContent } from "./types"
+import { getMenu } from "../get-menu"
+import type { DrupalMenuLinkContent } from "../types"
 
 export function useMenu<T extends DrupalMenuLinkContent>(
   name: string