add one more dependency in composer for creating symfony-recipe

[kricha]

I am targeting this branch, because we are creating recipe for 3.x version.

Fix for symfony/recipes-contrib#235

Changelog

### Added
- added symfony/templating dependency to composer for using symfony recipes

[OskarStark]

What about #457 ?

[kricha]

@OskarStark aha.. ok, i could close this one.

[jordisala1991]

It could get merged independently from the other PR...

[kricha]

@OskarStark if all is ok, you can merge this one 😅

[jordisala1991]

Please explain why did you added this dependency to composer on the changelog

[kricha]

@jordisala1991 because without this i'm getting this error:

Executing script cache:clear [KO]
 [KO]
Script cache:clear returned with error code 1
!!
!!  In FrameworkExtension.php line 217:
!!
!!    Templating support cannot be enabled as the Templating component is not ins
!!    talled.
!!
!!
!!

[jordisala1991]

Yep, I get it, but you need to explain it on the changelog :) End users should know what does change with your PR

[kricha]

@jordisala1991 is it ok now?

[covex-nn]

This PR will not help to create recipe. Because, you cannot configure framework in your recipe, you cannot add this to your config (this is against rules):

framework:
    templating:
        engines: ["twig"]

So, even if you will add symfony/templating to composer.json, templating service will not be created, and you will see new error message about it

[kricha]

@covex-nn yes, but we can add something like that:

framework:                 # Remove this section
    templating:            # if you'll be using this in config/packages/framework.yaml
        engines: ['twig']  #

[covex-nn]

@aLkRicha these lines will not be accepted with comments or without them. See discussion about session symfony/recipes#262. Session can be enabled only with this config:

framework:
    session: ~

... but they say, that we cannot do this. If session cannot be activated in recipe config, then templating cannot be activated too. Also, see stof's comment about templating: symfony/flex#247 (comment). He said, that "they precisely want to discourage the usage of the Templating wrapper in Flex projects".

[kricha]

@covex-nn so there is no way to create sonataadmin recipe because of session?

[covex-nn]

See symfony/recipes#333 - session will be activated by default after merge. Right now there will be error about session service

[kricha]

We need #457 instead of this.