Include ambient.d.ts files in adapter packages. (#6917)

* Include ambient.d.ts files in adapter packages.

Fixes automatic typing for Cloudflare caches and similar stuff.

* Update packages/adapter-netlify/package.json

* Update packages/adapter-node/package.json

* Update packages/adapter-vercel/package.json

* Update .changeset/dull-cows-sneeze.md

Co-authored-by: Rich Harris <hello@rich-harris.dev>

Author: SG60

.changeset/dull-cows-sneeze.md

@@ -0,0 +1,6 @@
+---
+'@sveltejs/adapter-cloudflare': patch
+'@sveltejs/adapter-cloudflare-workers': patch
+---
+
+Include ambient.d.ts files in adapter packages.

packages/adapter-cloudflare-workers/package.json

@@ -19,6 +19,7 @@
 	"main": "index.js",
 	"types": "index.d.ts",
 	"files": [
+		"ambient.d.ts",
 		"files",
 		"index.d.ts"
 	],

packages/adapter-cloudflare/package.json

@@ -20,7 +20,8 @@
 	"files": [
 		"files",
 		"index.js",
-		"index.d.ts"
+		"index.d.ts",
+		"ambient.d.ts"
 	],
 	"main": "index.js",
 	"scripts": {