Add self types support in coercers and remove resource type from int

Author: SerafimArts

src/Type/Coercer/ArrayKeyTypeCoercer.php

@@ -15,6 +15,7 @@ final class ArrayKeyTypeCoercer implements TypeCoercerInterface
     public function coerce(mixed $value, Context $context): int|string
     {
         return match (true) {
+            \is_string($value),
             \is_int($value) => $value,
             $value === false,
             $value === null => 0,

src/Type/Coercer/FloatTypeCoercer.php

@@ -19,6 +19,8 @@ public function coerce(mixed $value, Context $context): float
         }
 
         return match (true) {
+            \is_float($value),
+            \is_integer($value),
             \is_numeric($value) => (float) $value,
             $value === false,
             $value === null => 0.0,

src/Type/Coercer/IntTypeCoercer.php

@@ -31,7 +31,8 @@ public function coerce(mixed $value, Context $context): int
             $value === false,
             $value === null => 0,
             $value === true => 1,
-            \is_resource($value) => \get_resource_id($value),
+            // Resource to int type coercion is not obvious:
+            // \is_resource($value) => \get_resource_id($value),
             default => throw InvalidValueException::createFromContext(
                 value: $original,
                 context: $context,