[Config] Move 3 rules from coding style set to their proper sets

[TomasVotruba]

These 3 rules are not coding style, but belong to other sets:

1) RemoveFinalFromConstRector → dead code set

The final on a constant of a final class is dead noise:

 final class SomeClass
 {
-    final public const NAME = 'value';
+    public const NAME = 'value';
 }

Placed in the "easy picks" group, as it removes a redundant keyword only.

2) ExplicitPublicClassMethodRector → php 5.3 set

Explicit visibility is a PHP 5 upgrade step, same family as VarToPublicPropertyRector:

 class SomeClass
 {
-    function run()
+    public function run()
     {
     }
 }

3) TernaryConditionVariableAssignmentRector → code quality set

Not a style choice, but a simplification, next to the other ternary rules:

 function ternary($value)
 {
-    $value ? $a = 1 : $a = 0;
+    $a = $value ? 1 : 0;
 }

The rule classes keep their current namespace, only the set registration moves. The SetRectorsResolverTest count is bumped, as the php 5.3 set has one more rule now.