[sulu/formbundle] Adding support for version 3

[mamazu]

Q	A
License	MIT
Packagist	https://packagist.org/packages/sulu/form-bundle

Adding build recipie for the Sulu 3 version of the FormBundle.

/cc @alexander-schranz

[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-contrib/flex/pull-1941/index.json
   # On Windows
   SET SYMFONY_ENDPOINT=https://raw.githubusercontent.com/symfony/recipes-contrib/flex/pull-1941/index.json

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

   composer req symfony/flex
   composer req 'sulu/form-bundle:^3.0'

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.

sulu/form-bundle

2.0 vs 2.2

diff --git a/sulu/form-bundle/2.0/config/packages/sulu_form.yaml b/sulu/form-bundle/2.2/config/packages/sulu_form.yaml
index 345b99de..fd741d41 100644
--- a/sulu/form-bundle/2.0/config/packages/sulu_form.yaml
+++ b/sulu/form-bundle/2.2/config/packages/sulu_form.yaml
@@ -3,6 +3,8 @@ sulu_form:
         from: "%env(SULU_ADMIN_EMAIL)%"
         to: "%env(SULU_ADMIN_EMAIL)%"
         sender: "%env(SULU_ADMIN_EMAIL)%"
+    media:
+        protected: true
 
 framework:
     esi: true

2.2 vs 2.4

diff --git a/sulu/form-bundle/2.2/config/packages/sulu_form.yaml b/sulu/form-bundle/2.4/config/packages/sulu_form.yaml
index fd741d41..1f5cde76 100644
--- a/sulu/form-bundle/2.2/config/packages/sulu_form.yaml
+++ b/sulu/form-bundle/2.4/config/packages/sulu_form.yaml
@@ -1,11 +1,8 @@
 sulu_form:
+#   csrf_protection: true # requires additional changes see: https://github.com/sulu/SuluFormBundle/blob/2.4.0/Resources/doc/csrf.md
     mail:
         from: "%env(SULU_ADMIN_EMAIL)%"
         to: "%env(SULU_ADMIN_EMAIL)%"
         sender: "%env(SULU_ADMIN_EMAIL)%"
     media:
         protected: true
-
-framework:
-    esi: true
-    fragments: true
diff --git a/sulu/form-bundle/2.2/post-install.txt b/sulu/form-bundle/2.4/post-install.txt
index a46c13c7..051f4d23 100644
--- a/sulu/form-bundle/2.2/post-install.txt
+++ b/sulu/form-bundle/2.4/post-install.txt
@@ -2,5 +2,6 @@
     1. Print the sql statements required to update your database schema by running php bin/console doctrine:schema:update --dump-sql.
     2. If the statements look fine to you, run the same command using --force to execute them.
     3. Make sure your user has all the necessary permissions for the SuluFormBundle.
+    4. Use bin/console sulu:form:generate-form to create a dummy form.
 
   * Read the documentation at https://github.com/sulu/SuluFormBundle/blob/2.x/Resources/doc/index.md

2.4 vs 3.0

diff --git a/sulu/form-bundle/2.4/config/packages/sulu_form.yaml b/sulu/form-bundle/3.0/config/packages/sulu_form.yaml
index 1f5cde76..8f606ed8 100644
--- a/sulu/form-bundle/2.4/config/packages/sulu_form.yaml
+++ b/sulu/form-bundle/3.0/config/packages/sulu_form.yaml
@@ -1,5 +1,5 @@
 sulu_form:
-#   csrf_protection: true # requires additional changes see: https://github.com/sulu/SuluFormBundle/blob/2.4.0/Resources/doc/csrf.md
+#   csrf_protection: true # requires additional changes see: https://github.com/sulu/SuluFormBundle/blob/3.0/Resources/doc/csrf.md
     mail:
         from: "%env(SULU_ADMIN_EMAIL)%"
         to: "%env(SULU_ADMIN_EMAIL)%"
diff --git a/sulu/form-bundle/2.4/config/routes/sulu_form_admin.yaml b/sulu/form-bundle/3.0/config/routes/sulu_form_admin.yaml
index bac30391..3df594dc 100644
--- a/sulu/form-bundle/2.4/config/routes/sulu_form_admin.yaml
+++ b/sulu/form-bundle/3.0/config/routes/sulu_form_admin.yaml
@@ -1,4 +1,3 @@
 sulu_form_api:
-    resource: "@SuluFormBundle/Resources/config/routing_api.yml"
-    type: rest
+    resource: "@SuluFormBundle/Resources/config/routing_api.yaml"
     prefix: /admin/api
diff --git a/sulu/form-bundle/2.4/post-install.txt b/sulu/form-bundle/3.0/post-install.txt
index 051f4d23..10833fd0 100644
--- a/sulu/form-bundle/2.4/post-install.txt
+++ b/sulu/form-bundle/3.0/post-install.txt
@@ -4,4 +4,4 @@
     3. Make sure your user has all the necessary permissions for the SuluFormBundle.
     4. Use bin/console sulu:form:generate-form to create a dummy form.
 
-  * Read the documentation at https://github.com/sulu/SuluFormBundle/blob/2.x/Resources/doc/index.md
+  * Read the documentation at https://github.com/sulu/SuluFormBundle/blob/3.0/Resources/doc/index.md