Add template annotations

Thanks to these @templates PHPStan no longer needs stub file.

Author: lSimul

LeanMapperQuery/Entity.php

@@ -30,6 +30,12 @@ abstract class Entity extends LeanMapper\Entity
 	/** @var array */
 	protected static $magicMethodsPrefixes = [];
 
+	/**
+	 * @template T of Entity
+	 * @param    string    $field
+	 * @param    IQuery<T> $query
+	 * @return   T[]
+	 */
 	protected function queryProperty($field, IQuery $query)
 	{
 		return static::queryEntityProperty($this, $field, $query);

LeanMapperQuery/IQuery.php

@@ -14,6 +14,8 @@
 /**
  * @author     Michal Bohuslávek
  * @deprecated use Query instead; the IQuery interface might get removed in the future
+ *
+ * @template T of Entity
  */
 interface IQuery
 {

LeanMapperQuery/Query.php

@@ -24,6 +24,8 @@
 /**
  * @author Michal Bohuslávek
  *
+ * @template T of Entity
+ *
  * @method $this where($cond, ...$args)
  * @method $this orderBy($field)
  * @method $this asc(bool $asc = true)