Add the output option (#4015)

* Start of work on astroConfig.mode === 'server'

* Add tests and more

* adapter -> deploy in some places

* Add fallback for `adapter` config

* Update more tests

* Update image tests

* Fix clientAddress test

* Updates based on PR review

* Add a changeset

* Update integrations tests + readme

* Oops

* Remove old option

* Rename `mode` to `output`

* Update Node adapter test

* Update test

* fred pass

* fred pass

* fred pass

* fix test

Co-authored-by: Fred K. Schott <fkschott@gmail.com>

Author: matthewp

packages/integrations/cloudflare/README.md

@@ -9,6 +9,7 @@ import { defineConfig } from 'astro/config';
 import cloudflare from '@astrojs/cloudflare';
 
 export default defineConfig({
+  output: 'server',
   adapter: cloudflare()
 });
 ```

packages/integrations/cloudflare/src/index.ts

@@ -21,6 +21,11 @@ export default function createIntegration(): AstroIntegration {
 			'astro:config:done': ({ setAdapter, config }) => {
 				setAdapter(getAdapter());
 				_config = config;
+
+				if(config.output === 'static') {
+					console.warn(`[@astrojs/cloudflare] \`output: "server"\` is required to use this adapter.`);
+					console.warn(`[@astrojs/cloudflare] Otherwise, this adapter is not required to deploy a static site to Cloudflare.`);
+				}
 			},
 			'astro:build:start': ({ buildConfig }) => {
 				_buildConfig = buildConfig;