Feature/issue 948 web api standardization

[thescientist13]

Related Issue

resolves #948 / #949

Summary of Changes

1. Adopt (most of) core to work with Web APIs URL / Request / Response
2. Refactor all plugins to adopt above convention
3. Updated all impacted documentation

TODOs

1. Fix Windows compat - Feature/issue 948 web api standardization windows compat refactor #1047
2. Refactor Request.clone / Response.clone, as it seems to cause this issue

   (node:81167) MaxListenersExceededWarning: Possible EventTarget memory leak detected. 11 abort listeners added to [AbortSignal]. Use events.setMaxListeners() to increase limit

   • somewhat related, maybe we can "undo" this now - remove setMaxListeners suppression call #1046
3. Restore ETag middleware for develop command
4. Documentation / Breaking Changes
   • greenwood.config.js
   • ResourceInterface (extensions, lifecycle signatures, util methods)
5. Clean up / address TODOs and / or make tracking issues
   • convert node modules lib to use URL
   • convert the graph lifecycle to use URL (maybe as part of bundle and optimize server and API routes and serve from output directory (decouple serve task from source code) #946 ?)
   • how to handle Response already setting a default Content-Type of text/plain;charset=UTF-8 - handle default Content-Type being set in default Response instances #1049
   • convert all fs usage to fs.promises + URL
   • Figure out consistent usage fs and sync / async version for things like .map, .filter - added to make Greenwood CLI and plugins async through and through #823
   • flesh out all remaining Response properties in mergeResponse - handle merging additional Request / Response instance properties #1048
   • Content-Type vs content-type consistency ? - tracking in the backlog
   • refactor out resolveForRelativeUrl from ResourceInterface
   • refactor out find package.json
   • remove unused this.extensions
   • refactor rollup.config.js resolveId to use this.resolveRelativeUrl from ResourceInterface
   • convert to Fastify, or something that can handle a native Response object? - added to Backlog
6. Convert / refactor init package (GFI) - refactor init package #1050
7. static router spec undefined script and preload (build.config.static-router.spec.js) (GFI) - static router outputting a <script> tag with a path of /undefined (when an SSR route is present?) #1051

   <script type="module" src="/undefined"></script>

8. <script> tag not closing for inline + none optimizations, like for Google Analytics? (GFI) - <script> tags using optimization attributes have a space before the closing bracket of the opening tag #1052

    <script >
      var getOutboundLink = function(url) {
        gtag('event', 'click', {
          'event_category': 'outbound',
          'event_label': url,
          'transport_type': 'beacon'
        });
      }
      window.dataLayer = window.dataLayer || [];
      function gtag(){dataLayer.push(arguments);}
      gtag('js', new Date());
      gtag('config', 'UA-117350131-1', { 'anonymize_ip': true });
    </script>