feat(rich_text): Deprecate array argument richt_text twig filter

[silasjoisten]

Once this is merged i will deprecate array usage for this:

@trigger_deprecation('storyblok/symfony-bundle', '1.4', 'Passing an array to "%s" is deprecated, use "%s" instead.', __METHOD__, RichText::class);

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.98%. Comparing base (38202a0) to head (2ce1364).

Additional details and impacted files

@@             Coverage Diff              @@
##             master      #41      +/-   ##
============================================
+ Coverage     92.94%   92.98%   +0.03%     
- Complexity      154      155       +1     
============================================
  Files            28       28              
  Lines           624      627       +3     
============================================
+ Hits            580      583       +3     
  Misses           44       44              

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[silasjoisten]

Ready to be reviewed an merged @OskarStark @edodusi