Use schema modifiers as mutable

[roxblnfk]

🔍 What was changed

Call modifier's withRole() method at the same moment when they are added into Entity definition.
An exception will be thrown when a modifier is added to an entity without role

🤔 Why?

To not to rewrite all the stateful behaviors

📝 Checklist

• Closes 🐛 All the behaviors must be stateless entity-behavior#33
• How was this tested:
  • Tested manually
  • Unit tests added

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.90%. Comparing base (8fbc463) to head (e618563).

Additional details and impacted files

@@            Coverage Diff            @@
##                2.x      #75   +/-   ##
=========================================
  Coverage     94.90%   94.90%           
  Complexity      590      590           
=========================================
  Files            45       45           
  Lines          1667     1669    +2     
=========================================
+ Hits           1582     1584    +2     
  Misses           85       85           

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