Prefix form type options & code cleanup

[jmsche]

Hi,

Sending a big PR :)

Here's what's been done:

• Escape form options/variables with "froala_" namespace (cherry-picked from @mpoiriert commit)
• Support for ajax loading (cherry-picked from @mpoiriert commit)
• Add options related to FontAwesome third party plugin
• Add parameter types & return types everywhere possible
• Fix Twig extension
• Change directory structure
• Exclude some files & directories for releases
• Fix plugins' CSS not loaded correctly
• Don't load packaged Froala JS/CSS files as they contain all plugins
• Setup php-cs-fixer for Github Actions
• Setup phpstan for Github Actions
• README update

After merging this PR, it will require a major version bump (to 4.0.0) as it introduces huge BC breaks, eg. form type option prefixes and added parameter/return types.

Even if it's not really easy, could you please review the PR before merging it?

Thank you!

[sguionni]

I'm not using Symfony nor this bundlle since long time, so i'm not able to test/review the code

[sguionni]

@stefanneculai can you please add @jmsche to the Froala team and grant him rights to this repo ? I think this is boring for him to wait for my action to merge some code.

[jmsche]

Added options related to FontAwesome third party plugin.

[jmsche]

Hi @sguionni, while waiting for an answer from @stefanneculai could you please merge this PR & tag a 4.0.0 release?

This would allow to fix several issues for people, including the integration to Sonata & FontAwesome options.

[jmsche]

A big thank you :)

[sguionni]

Thank to you! Can i close #17 ?

[jmsche]

Sure :)