chore: phpstan rules added

phpstan.dist.neon

@@ -8,9 +8,27 @@ parameters:
         - ajax
     bootstrapFiles:
         - tests/phpstan-bootstrap.php
+    treatPhpDocTypesAsCertain: false
     customRulesetUsed: true
 services:
     -
         class: \PHPStan\Rules\Properties\TypesAssignedToPropertiesRule
         tags:
             - phpstan.rules.rule
+    -
+        class: \PHPStan\Rules\Functions\ArrowFunctionReturnTypeRule
+        tags:
+            - phpstan.rules.rule
+    -
+        class: \PHPStan\Rules\Functions\ClosureReturnTypeRule
+        tags:
+            - phpstan.rules.rule
+    -
+        class: \PHPStan\Rules\Functions\ReturnTypeRule
+        tags:
+            - phpstan.rules.rule
+    -
+        class: \PHPStan\Rules\Methods\ReturnTypeRule
+        tags:
+            - phpstan.rules.rule
+