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/inner/enumEntries.kt

@@ -1,10 +1,10 @@
 enum class E {
     E1 {
         override fun foo() = outerFun() + super.outerFun()
-    }
+    },
     E2 {
         override fun foo() = E1.foo()
-    }
+    };
     
     abstract fun foo(): Int