Move recipes from metas to packs

[nicolas-grekas]

Q	A
License	MIT
Doc issue/PR	-

Since symfony/flex#923, recipes can be bound to packs and still be managed by recipes:update.
Aka packs don't need a sibling *-meta repo anymore.

[github-actions]

Thanks for the PR 😍

How to test these changes in your application

1. Define the SYMFONY_ENDPOINT environment variable:

   # On Unix-like (BSD, Linux and macOS)
   export SYMFONY_ENDPOINT=https://raw.githubusercontent.com/symfony/recipes/flex/pull-1093/index.json
   # On Windows
   SET SYMFONY_ENDPOINT=https://raw.githubusercontent.com/symfony/recipes/flex/pull-1093/index.json

2. Install the package(s) related to this recipe:

   composer req 'symfony/flex:^1.16'
   composer req 'api-platform/admin-pack:^1.0' 'symfony/psr7-pack:^1.0' 'symfony/webapp-pack:^1.0'

3. Don't forget to unset the SYMFONY_ENDPOINT environment variable when done:

   # On Unix-like (BSD, Linux and macOS)
   unset SYMFONY_ENDPOINT
   # On Windows
   SET SYMFONY_ENDPOINT=

Diff between recipe versions

In order to help with the review stage, I'm in charge of computing the diff between the various versions of patched recipes.
I'm going keep this comment up to date with any updates of the attached patch.

[kbond]

We'll need new flex releases.

[stof]

indeed, this should not have been done before releasing the Flex version supporting the pre-requisite, because recipe changes go live on merge, while Flex changes don't propagate in the ecosystem until the release is done (and even then, it is safer to give a bit of time)

[nicolas-grekas]

All tags pushed. This should all work nicely now.