Enum deprecated syntax detection implemented and integrated into DeclarationsChecker.

A lot of tests was changed to refactor deprecated syntax. Six new tests were added to check deprecated syntax detection.
Diagnostic for "enum entry uses deprecated super constructor": constructor is highlighted
Diagnostic for "enum entry uses deprecated or no delimiter".
One warning removed.

compiler/testData/diagnostics/tests/controlFlowAnalysis/UninitializedOrReassignedVariables.kt

@@ -71,11 +71,11 @@ fun t1() {
 enum class ProtocolState {
   WAITING {
     override fun signal() = ProtocolState.TALKING
-  }
+  },
 
   TALKING {
     override fun signal() = ProtocolState.WAITING
-  }
+  };
 
   abstract fun signal() : ProtocolState
 }