[monorepo] add integration for GitHub Code Spaces (#32722)

* [web] serve site manifest as application/json

* [monorepo] bail out early from dev-env-setup when inside devcontainer

* [monorepo] move utils for waiting for services into shared bash script

* [monorepo] move domain related env-vars into dedicated .env file

The .env file will be overridden in GitHub Code Spaces.

* [monorepo] remove unused initial_mongo_setup Make target

It was previously used for the mongo replica set setup.
That setup is a docker init script now.

* [monorepo] add flag for silencing docker build output

* [monorepo] add integration for GitHub Code Spaces

* [web] make prettier happy

* [web] restore no use-credentials for manifest outside code spaces

* [monorepo] run make install as part of post-start again

GitOrigin-RevId: 8c2cc3b969b7e3e8f9c5dac778192c9412cbf4df

services/web/config/settings.defaults.js

@@ -327,6 +327,8 @@ module.exports = {
   // that are sent out, generated links, etc.
   siteUrl: (siteUrl = process.env.PUBLIC_URL || 'http://127.0.0.1:3000'),
 
+  isCodeSpace: process.env.IS_CODE_SPACE === 'true',
+
   lockManager: {
     lockTestInterval: intFromEnv('LOCK_MANAGER_LOCK_TEST_INTERVAL', 50),
     maxTestInterval: intFromEnv('LOCK_MANAGER_MAX_TEST_INTERVAL', 1000),