[Fastify] Extract logic into redwood plugin

[jtoar]

Update: this one's experimental and it works so calling it good enough for now but there's some DX things I'd certainly like to do before it goes stable. If checks pass, getting into canary so others can be unblocked on dependent features.

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This PR takes a stab at extracting out the fastify logic into a plugin. Spun off from the Container working group. Just a work in progress right now. Cc @Josh-Walker-GM

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Motivation
We wish to reach a point where a user can avoid invoking the CLI to run api or web servers. This is pretty much a necessary step to reduce the docker image size.

Changes
A new package @redwoodjs/fastify which includes two fastify plugins for running the redwood api and web servers.

The cli package has been updated to have it's own command handlers for yarn rw serve rather than import the ones from api-server. These command handlers are similar but register the new web/api fastify plugins. There remains support for loading config from the server.config.js file.

This should not be breaking as there have been no changes to the api-server package. Those who use that package for their own purposes will have no changes. I would consider this PR a deprecation of the api-server package - this should be discussed with the team alongside the next steps below. The new cli handlers also support all the same arguments so there is no breaking change there.

Next steps

1. Add an ejection command to scaffold a server.js|ts file in src/api and update cli command handlers to simply run that file if it exists. That change should remove support for the server.config.js file.
2. Consider the same approach for the web side given future need for a web server. (Another PR)

[replay-io]

19 replays were recorded for 556b6dc.

0 Failed

19 Passed

• requireAuth graphql checks

  locator.waitFor: Target closed
  =========================== logs ===========================
  waiting for locator('.rw-form-error-title').locator('text=You don\'t have permission to do that') to be visible
  ============================================================

• useAuth hook, auth redirects checks
• Check that a specific blog post is prerendered
• Check that about is prerendered
• Check that homepage is prerendered
• Check that meta-tags are rendering the correct dynamic data
• Check that rehydration works for page not wrapped in Set
• Check that rehydration works for page with Cell in Set
• Check that rehydration works for page with code split chunks
• Check that you can navigate from home page to specific blog post
• Waterfall prerendering (nested cells)
• RBAC: Admin user should be able to delete contacts
• RBAC: Should not be able to delete contact as non-admin user
• Smoke test with dev server
• Smoke test with rw serve
• Loads Cell mocks when Cell is nested in another story
• Loads Cell Stories
• Loads MDX Stories
• Mocks current user, and updates UI while dev server is running

View test run on Replay ↗︎

[replay-io]

14 replays were recorded for b196757.

3 Failed

useAuth hook, auth redirects checks

    ```
    locator.waitFor: Timeout 5000ms exceeded.
    =========================== logs ===========================
    waiting for locator('text=Username `[email protected]` already in use') to be visible
    ============================================================
    ```
  </ol>
</details>
<details>
  <summary><a href=https://app.replay.io/recording/7d74427a-a68b-4605-a5b9-16d5b70570a2>RBAC: Should not be able to delete contact as non-admin user</a></summary>
  <ol type="1">
    
    ```
    locator.waitFor: Timeout 5000ms exceeded.
    =========================== logs ===========================
    waiting for locator('text=Username `[email protected]` already in use') to be visible
    ============================================================
    ```
  </ol>
</details>
<details>
  <summary><a href=https://app.replay.io/recording/26236dab-1974-410c-b9c9-6736992f047a>Smoke test with dev server</a></summary>
  <ol type="1">
    
    ```
    page.textContent: Target closed
    =========================== logs ===========================
    waiting for locator('text=Meh waistcoat succulents umami')
    ============================================================
    ```
  </ol>
</details>

11 Passed

• Check that a specific blog post is prerendered
• Check that about is prerendered
• Check that homepage is prerendered
• Check that meta-tags are rendering the correct dynamic data
• Check that you can navigate from home page to specific blog post
• Waterfall prerendering (nested cells)
• Smoke test with rw serve
• Loads Cell mocks when Cell is nested in another story
• Loads Cell Stories
• Loads MDX Stories
• Mocks current user, and updates UI while dev server is running

View test run on Replay ↗︎

[Josh-Walker-GM]

Created https://community.redwoodjs.com/t/fastify-server-file-experiment/4851 which is empty right now but can be updated when things crystallise a little more.